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About john t. borgman
(Top Expert on this page)

Expertise
I work days, so I can only answer early in the day or later in the evening, I live in Oregon. I have been so good at all the other area's of hvac, I am probably the only hvac guy that does not know oil. ( lol ) I am very well versed in gas, electric and heat pumps and will only answer residential applications. I have been known the past decade or so, by my employers as the guy you send when no one can figure it out. Trouble shooting is my special. I understand the physics behind air flow, refrigerants and electricity. I understand programmable t-stats, zone controls, economizers, fossil fuel kits and the engineering thought process in the wiring and construction of residential equipment

Experience
I was lucky enough to start in this field over 25 years ago as an installer, for a company that installed the best duct systems I have ever seen, even to this day. The best ,as far as understanding the way air really flows through a duct system, from the return air to the very last supply register . They also had great pride and the duct work was put in, not only to last 50 years, but to look exceptional. Then as I started doing service work, I was again fortunate that I found a 3 year engineering class being put on be a man that was the educational director for the Entire united states for a society called " the Refrigeration Service Engineering Society " And for the next 3 years I schooled at night and practiced what I learned during the day, a great advantage over schooling and then trying to remember it years later.. Versed in duct design manual J heat gain/loss calculations. Also experience in wine rooms and indoor swimming pool hvac & humidity controls

Publications
I have 2 inventions that have gone through the process and been recorded at the National Institute of Standards and Technology from start to finish and thus been invited to national innovation workshops by the dept. of Commerce and the dept. of Energy. They are waste heat recovery devices that N.I.S.T approved as valid and am currently looking for marketing partners to get this product into the hands of consumers and make a BIG difference in Energy savings for every Household and Eatery and take a big bite in the the peak hours power consumption that face our Utilities companies.

Education/Credentials
factory training in Lennox ,Rheem, Ruud ,Trane, Tempstar ,Carrier, Day&Night, Payne, Bryant, Coleman, Intertherm, Ultra boilers, Unico, Mitsubishi,Sanyo, Taylor, Nicewonger, . Associates degree in Refrigeration Engineering. Certified with Energy Department, Check-me Program, have N.A.T.E. certifications in gas, a/c & heat pump. Teach and apprentice at every company I work at.

You are here: Experts > Home/Garden > Home Appliances > Heating, Air Conditioning, Fridge, HVAC

Questions Answered By Expert john t. borgman
In Category Heating, Air Conditioning, Fridge, HVAC

Subject	Date Asked

Gas furnace Blower noise	11/20/2009
Q: The blower started to make a whining noise. The blower motor appears to be turning normally. I saw ... A: Rich, It sounds to me like you are describing the draft inducer motor not the blower. What is the ...
heat pump, little heat,	11/19/2009
Q: I'm new to this, and I have a little schooling on this, so here is the problem. I have a heat pump ... A: Gary, Well now.......could be they wired the lock out for the strips backwards and they won't work ...
Wishing the death of 18 yr old heat pump	11/19/2009
Q: I just bought a home with a 18 yr old Carrier 2.5 ton heat pump. The furnace was replaced last year. ... A: Angela, Wow, thank god your poor husband got out from that marriage. And FYI your rating will be ...
Gas central heat unit	11/19/2009
Q: I am replacing the thermocouple that keeps the pilot light lit and I notice that there is a lot of ... A: Bill, The air that is mixed with the gas has impurity in it. Depending on the area and the area ...
Little air flow from duct work	11/18/2009
Q: My husband and I are building our own home. We purchased a outdoor wood hot air furnace WADENA. Our ... A: Amy, Going to need more info to answer your question.An 8" duct cannot move even half that amount ...
heat pump, little heat,	11/18/2009
Q: I'm new to this, and I have a little schooling on this, so here is the problem. I have a heat pump ... A: Gary, The thermostat should have first and second stage heat, second stage is usually wired ...
amana 90	11/18/2009
Q: I have a amana 90 furnace that will light sometime and sometimes it won't light i think it might be ... A: Aki, I need a bit more info....Is the lighting device a Hot Surface Ignitor, spark with a pilot, ...
Thermostat	11/18/2009
Q: John, I have recently purchased a new house. It's over 1 1/2 years old..no ones has lived in it. We ... A: Bill, Here is the owners manual for that thermostat. ...
heat pump	11/17/2009
Q: I hve a carrier unit modle # fb4anf030. also have a programable thermostat. went to adjust heat ... A: Todd, I am not sure what you are asking. Where do you hear a hum? And you are sure it is a ...
Intertherm heatstrip air handler(mod home)	11/17/2009
Q: My neighbor has a intertherm air handler that is heating, but will not turn the fan on in auto on ... A: John, Ih the cooling mode the blower is turned on by a small black relay that is in the upper left ...
Heat Pump Pressures	11/15/2009
Q: How do you determine if the compressor valves are bad or the reversing valve is not shifting 100% ... A: Bill,\ Sorry I mistook your knowledge level. It will depend on the degree of leakage. In other ...
Wishing the death of 18 yr old heat pump	11/15/2009
Q: I just bought a home with a 18 yr old Carrier 2.5 ton heat pump. The furnace was replaced last year. ... A: Angela, I do not answer private questions that ask to break the law!!!!!!!!!!!!!!!!!! But I will ...
Heat Pump Pressures	11/15/2009
Q: How do you determine if the compressor valves are bad or the reversing valve is not shifting 100% ... A: Bill, Simple answer bill. You check the amp draw of the compressor while it is running. If the ...
american standard freedom 70 propane furnace	11/14/2009
Q: our furnace is 9 years old. It is american standard freedom 70 propane with one zone. Recently, ... A: Sherry, It is not the control board. There are several reasons for that "fault" code, but most ...
freezers	11/14/2009
Q: Can a freezer be transported on it's side and then be set upright and work without problems, or are ... A: Ron, Although it is highly recommended not to do that, if you do then you must have it upright and ...
Vibration from Heat pump	11/13/2009
Q: We have an outside AC unit/heat pump. The unit kicked on all last winter and all summer providing ... A: Micah, The first thing would be to look at the fan blade on the top while it is running and see if ...
PROGRAMMABLE TSTAT	11/12/2009
Q: I recently installed a rite-temp model 6036 7 day programmable tstat to update my heat pump. i ... A: Kurt, That thermostat will work fine on your heat pump, it just has to get wired correctly. So, ...
payne furnace	11/11/2009
Q: igniter lights, furnace fires and stays lit, blower comes on, spark ignition continues to spark when ... A: Barry, You want to be careful not to break the ceramic, but the rod needs to be in a position to ...
Rheem Criterion II Noise	11/11/2009
Q: This furnace is 8 years old & installed in a 2000 sq ft 4 bdrm house in SoCal. It makes a whining ... A: Don, In that case it might be, I got the impression from the way you wrote the question this has ...
Rheem Criterion II Noise	11/10/2009
Q: This furnace is 8 years old & installed in a 2000 sq ft 4 bdrm house in SoCal. It makes a whining ... A: Don, The sound is coming from the louvers on your return air grill. Take some needle nose pliers ...
AC Unit.... what to do???	11/10/2009
Q: I'm very confused about a problem with my outside AC Unit and would be really grateful to hear your ... A: Juliet, You should replace it now. 2 reasons....if it dies then the compressor will run EXTREMELY ...
payne furnace	11/10/2009
Q: igniter lights, furnace fires and stays lit, blower comes on, spark ignition continues to spark when ... A: Barry, sorry I wasn't even close,I guess I am getting old,.lol, yes that is the one. Built in that ...
payne furnace	11/10/2009
Q: igniter lights, furnace fires and stays lit, blower comes on, spark ignition continues to spark when ... A: Barry, No, you have a three wire pilot part # Lh360 that needs to be replaced. If you look the ...
Squeal blower motor	11/9/2009
Q: my AC air handler (no heat) is horizontally installed in a hot and tight fitting attic -- a UPG 4 ... A: Patrick, You say direct drive , but it sounds like you have a belt drive is that correct? If so ...
Rewiring a Coleman Elec. Furnance	11/9/2009
Q: I have a Coleman Electric Furnace model 3500a, it has the controls on the furnace. I want to ... A: Doyle, you must have some kind of thermostat, besides the manual fan switch if you have heating ...
Electric Furnace with strange cycle	11/9/2009
Q: I have a airforce central heat/air conditioning. The Furnace is a YORK model N4AHD14A06A (located ... A: Thong, It sounds like you probably have a mechanical fan/limit switch that is in need of ...
humidity in house	11/9/2009
Q: I recently purchased a house and am noticing a problem with very humid air in the house. The windows ... A: Nick, No, windows , being a better grade I assume will just make it worse. What form of heat do ...
Compressor matching air handler	11/8/2009
Q: John, You're so helpful I need to ask you another question. I have a 3 Ton Luxaire Compressor and ... A: Hey Scott, What that means is that you have an air handler capable of 1,600 cfm or air across the ...
Central heating	11/7/2009
Q: my central heating system is 3 months old and 2 months ago i have changed the thermostat to a ... A: Niles, When you open the door you stop power to the circuit board and it clears any faults, or ...
air conditioner	11/6/2009
Q: I currently have a 4 ton 14 seer Rheem bought in 1998. Then handler and the condensing unit are ... A: Lisa, Sounds like you have an air flow problem or the unit is not charged correctly. That TXV ...
Air Handler	11/4/2009
Q: I have a UPG Model MA Modular non-variable speed air handler. It is hooked up with ac and forced ... A: Scott, You did not tell me that it was that way for a year!!! The fan runs when there is power to ...
Trane XB1000 Problem	11/3/2009
Q: This pas Saturday my AC kicked on and the Trane XB1000 that sits outside my house start making this ... A: Eric, First go out and spin the fan blade with nothing on, if it does not spin freely and go for a ...
Trane XL 90 not igniting	11/3/2009
Q: My Trane XL 90 is not igniting. The AC/fan works fine. When I turn the heat up on the thermostat, ... A: Joe, If the blower motor is bad ( check by switching tstat fan switch to on) then the furnace ...
Air Handler	11/3/2009
Q: I have a UPG Model MA Modular non-variable speed air handler. It is hooked up with ac and forced ... A: Scott, The fan gets it's power through the G wire and the tstat has a fan ON/Auto position. If ...
Little Giant Pump Company VCMA-20 Series	11/3/2009
Q: I saw you gave some great advice, so I had a question for you. I have a Little Giant Pump Company ... A: Jeff, I have actually had that happen. The micro switch reverses it's operation. You need a new ...
Wall Heater	11/2/2009
Q: I have a wall heater from williams company, its a old heater as the cold weather starts i turn on ... A: Sam, You need to change the thermocouple, the rod the pilot light hits and gets hot. It has a ...
Heat Pump	10/31/2009
Q: I have a Ducane 4 ton heat pump HP12B48 S/N 4468700322, Compressor ZR47K3FPV135 (scroll). The ... A: David, You have either a refrigerant or an air flow restriction. It would not be the indoor txv ...
American Standard vs. Carrier	10/31/2009
Q: I am going to be replacing our twenty year old gas furnace with a new 95%unit, so that we can ... A: Bob, American standard is Trane. And from a tech's point of view, Trane is far superior to the ...
Replacing Air handler	10/30/2009
Q: My air handler is rusty and the system leaked...and was repaired a month ago. The system is 10 ... A: Walt, What "system" was repaired? I can tell you this. For you to loose a compressor in 8 years ...
Day & night 373lav	10/29/2009
Q: I have a day & night 373lav Horizontal that will not open the gas valve. They provide a pretty handy ... A: Don, There are tons of boards out there, Don, but I believe that one gets the gas valve voltage ...
programmable thermostat	10/29/2009
Q: I'm trying to install a Honeywell Programmable thermostat to replace a Comfortmaker. I've got the ... A: David, I have not seen one with a #4. But the R & Rc are 24 hot, the W is heat, The G is for the ...
goodmen ninty-two furnace	10/28/2009
Q: when i turn it on and go down and watch it . blower comes on glows up clicks then trys again it ... A: Mike, The path for the 24 volts to the gas valve goes through the pressure switch and then up into ...
Water damage?	10/28/2009
Q: I just resently had a tolet flood, and when it flooded a lot of water got into the heating vent next ... A: William, It has to be either metal or flex. If it is metal and there is a vent cut into it, you ...
Water damage?	10/28/2009
Q: I just resently had a tolet flood, and when it flooded a lot of water got into the heating vent next ... A: William, Will need a lot more info to even venture a guess. Is the water closet directly above ...
Sticking Fan	10/27/2009
Q: At times the fan on our a/c unit won't spin. When we push the fan even a little bit it starts back ... A: Kathy, The problem is the run capacitor. That is a PSC ( permanent split capacitor ) motor. The ...
Heating System	10/26/2009
Q: My daughter just bought a townhouse and moved in about 3 weeks ago. She has electric forced hot air ... A: Susan, she can turn the temp wherever she wants, I don't know what yahoo told her that. And if the ...
Gas furnace	10/25/2009
Q: Tried to start the gas furnace but it will not light. I have checked all the safety ... A: Roger, Depending on the furnace, you will need to look at the schematic....the safties and ...
Gas furnace	10/24/2009
Q: Tried to start the gas furnace but it will not light. I have checked all the safety ... A: Roger, So, you did not say....does the ignitor lite up? if so and you have checked the gas ...
Low cfm/velocity problem	10/24/2009
Q: Could having too much cold air return(16x32 cast iron floor grate over two floor joist cavities 8x15 ... A: Ryan, Having a bit of a problem with your descriptions. But you cannot have to much return air as ...
temperature set on thermostat not recognized	10/23/2009
Q: The tenant called me and said that after one of the big storms when the power went out, they came ... A: Laura, Thanks for the compliments, but I need more info than that. If it is a heat pump the ...
Calcium build-up on brand new HVAC?	10/23/2009
Q: Our new 3.5 ton HVAC system was installed January, 2009. We used the heater from January through ... A: Joan, OK, first let us address the load calculations. Who did them and by what method? If they ...
Calcium build-up on brand new HVAC?	10/9/2009
Q: Our new 3.5 ton HVAC system was installed January, 2009. We used the heater from January through ... A: Joan, At your furnace location is the indoor coil. Hopefully they used a cased coil, which has a ...
Calcium build-up on brand new HVAC?	10/8/2009
Q: Our new 3.5 ton HVAC system was installed January, 2009. We used the heater from January through ... A: Joan, That seems extreem yes. But, the water that is condensed on the coil that would leave the ...
furnace return air	10/8/2009
Q: I have a high efficiency furnace and it has the PVC inlet and exhaust directly vented to the ... A: John, That is called make up air. Homes are built so tight now that we must introduce fresh air ...
Heil furnace not providing heat/running properly	10/7/2009
Q: I have Heil condensing gas furnace, model NTG9075FGA3 (manufactured by International Comfort ... A: Jason, If you didn't remove all the rocks from the pvc flue the pressure switch will not make. ( ...
superheat/subcool	10/6/2009
Q: I have just entered the a/c trade and I am attending school. We have been going over the ... A: Kaleb, First there is no 30 inches only 29.96 and service gauges are way off. Remember that when ...
superheat/subcool	10/6/2009
Q: I have just entered the a/c trade and I am attending school. We have been going over the ... A: Kaleb, VERY GOOD....one of the only opposites in physics is heat as there is no opposite, just the ...
superheat/subcool	10/6/2009
Q: I have just entered the a/c trade and I am attending school. We have been going over the ... A: Kaleb, Very good question. I love to help students of our field. You are correct in your ...
HE Gas furnace	10/5/2009
Q: We moved into a house that has a high efficiency forced air, natural gas furnace installed. The ... A: James, Good job on the filter. Do yourself a favor and get the cheapest pleated filter made and ...
Heat Pump Not Dehumidifying	10/5/2009
Q: The following is a summary of questions remaining after 2 "best of phoenix" ac companies, with clean ... A: Lisa, sorry got the last one first. Secret??? Demand them you paid for the job. And it sounds ...
Heat Pump Not Dehumidifying	10/4/2009
Q: The following is a summary of questions remaining after 2 "best of phoenix" ac companies, with clean ... A: Lisa, A TXV is simply a valve that slides one way to restrict the flow and the other to open the ...
ice build up on outside unit	10/4/2009
Q: I have a goodman central air anda heat for house in florida. this morning i heard a strange noise on ... A: Pat, Your filter??? It is probably clogged solid, if so change it and turn on the fan. If air ...
Burner cuts out fan stays running	10/4/2009
Q: Ducane gas furnace with Smart Valve and HSI pilot/sensor...draft inducer fan comes on, ignitor will ... A: Tim, It is not supposed to keep the HSI lit. A volt meter needs to be used on the valve to see ...
what size and type	10/3/2009
Q: i bought a home in eastern ky. complete remodel. 2 story. 1577 sq. feet each floor. the front of ... A: Will, I can't help you with the power bill either....lol I am not familiar with ky weather. If ...
my heater is no working	10/2/2009
Q: I have a Philco heating and cooling product model G6RA 072C-12A. The AC is working fine but I can ... A: I am unfamiliar with the type of lighting system that furnace uses, but if it is less than 15 ...
FURNACE NOT STAYING ON	10/2/2009
Q: I HAVE A CARRIER FURNACE THAT WILL NOT STAY ON. I HAVE CHECKED AND CLEAN WITH SAND PAPER THE FLAME ... A: Here is a link to get an owners manual to help with the fix ...
RHEEM 80 Imperial	10/1/2009
Q: I have just purchased a house and the HVAC unit is a RHEEM 80 Imperial. It has worked well all ... A: George, It is possible the pilot is plugged, but the majority of the time, that is the way the ...
Smell from furnace	10/1/2009
Q: I turned my forced air gas furnace on for the first time this year, and there is a strange smell ... A: Erica, Generally the first time you fire off the furnace the heat exchanger is coated with dust and ...
Air conditioning question	10/1/2009
Q: I am a bally's (gym) instructor and also an amateur at home building. Being a san diego resident i ... A: Leah, You have a couple problems. First you have a mis matched system it should be a 2 ton coil. ...
Residential Heat Pump	9/30/2009
Q: We are older folks renovating an even older two story home in Maryland. The house in about 2500 ft2. ... A: Leo, Before you make that decision on the radiant heat you should check out these boilers, they ...
Thermostat and auto changeover	9/30/2009
Q: Have a functioning system in either heat or cool mode, but in auto mode it will only respond to the ... A: Steve, First of all if it is the thermostat don't get a hunter, get a honeywell, only a few ...
Thermostat and auto changeover	9/29/2009
Q: Have a functioning system in either heat or cool mode, but in auto mode it will only respond to the ... A: Steve, I would call the owner of that company and insist on them making it right with you. Have ...
Rudd Air Conditioner about 6-8 yrs old	9/29/2009
Q: My air conditioner will not turn on, if I push down on the contact points it runs, as soon as I let ... A: Geoff, It sounds like best case you blew a 3 or 5 amp fuse on the circuit board inside the blower ...
new furnace	9/29/2009
Q: I live in N/W Indiana and have a 32 year old 100,000 BTU natl. gas furnace made by Rheem that still ... A: Jurgen, If you look your old furnace was 100,000 btu input and probably 70, 000 or so " bonnet " ...
AC compressor	9/29/2009
Q: My outside unit is 17 years old and the compressor has shorted out. I have a home warranty and it ... A: Charles, It depends on your warranty coverage. I would be amazed if it covers all costs of a ...
Heat Pump in Midwest	9/29/2009
Q: I've heard a lot of negative things on heat pumps in the mid west. I live in Topeka, KS and am fully ... A: Travis, Whoever is bidding the equipment should supply you with a worksheet that comes up with a ...
outdoor central a/c unit	9/28/2009
Q: Hello there. Okay...I am renting a mobile home in Alabama. My landlady lives in Virginia, and ... A: Shannon, That radiator thing is called the evaporator coil and if you look at it when the pipe in ...
Trouble with new A/C	9/28/2009
Q: I got a new airconditioner about a month ago. Since then, it doesn't work the way my previous (22 ... A: Tim, If when you lost power, you went into a brown out, or low power before it dropped out it is ...
AC motor	9/28/2009
Q: We installed a new 5-ton A/C unit about six years ago. Over the weekend the capacitor blew and it ... A: David, A potential problem in the future?? What the heck does that mean? and that motor only ...
aircon compressor loading	9/28/2009
Q: Mike , i am involved in a green building information , education and supply operation on the island ... A: You are asking questions that would take a great deal of my engineering skills, much more than I am ...
Rudd Air Conditioner about 6-8 yrs old	9/27/2009
Q: My air conditioner will not turn on, if I push down on the contact points it runs, as soon as I let ... A: Geoff, I will assume that the wire was outside, that is usually where puppys like to chew them. ...
ac unit in condo	9/26/2009
Q: I have an intermittent cooling problem - Compressor is on roof and installed in 2001, along with ... A: Lylah, Tell your friend that it is a possibility that the condenser motor is going bad and that it ...
coil matching with heat pumps	9/26/2009
Q: I have a thermo pride 106,000 btu oil furnace (1 year old). I have the local hvac people installing ... A: Dragan, you need to tell me if the coil matches the outdoor unit tonnage. If it is a 4 ton then ...
ac advice	9/25/2009
Q: I bought a home with a 4 ton evaporater coil A-SLB484422T+D all style ,this is asplit unit and the ... A: Carol, You only have a 2 1/2 ton compressor with a 4 ton evap coil? Yes you have a problem. Low ...
Rheem Corsair Air Conditioner	9/24/2009
Q: I have the above ac unit model# FADC-0305AS. It has stopped cooling at its normal capacity and I ... A: Eric, Make sure you have a clean filter and all vents are open. Then after 10 minutes running on ...
Carrier 58MVP -100-F-1-20	9/24/2009
Q: install 03.worked thru spring 09.bsmt location.vents thru roof of 2 flr house. lgth and bends ok to ... A: Terry, Are any of these techs(?) writing down and reporting to you any physical data and ...
Heat pump Blower Motor	9/24/2009
Q: I have a 1750 sq ft ranch home. 3 ton Carrier heat pump. Blower motor died. Local guy charged $979 ... A: Dan, The price you were charged was for a variable speed motor with a motor controller attached to ...
Crawlspace Conditioning	9/23/2009
Q: I live in southwest Ohio, gratefully enjoy all 4 seasons of the year. I recently bought my first ... A: Kathy, Probably the simple solution for your problem is when the central hvac system is up and ...
4 ton Trane xl16i isn't doing the job.	9/22/2009
Q: I’ve been thinking a lot about the AC pad and how the condensers are arranged. I measured the area ... A: If those numbers are accurate, you have 7 degree's of sub cooling and 37 degree's of superheat, ...
blower	9/22/2009
Q: i have a ruud fuel furnace. not sure what model. it appears to have 2 thermodisc. as it's warming ... A: Dan, Without a little more info it is hard to answer this one. As you look at the furnace, behind ...
ac unit in condo	9/21/2009
Q: I have an intermittent cooling problem - Compressor is on roof and installed in 2001, along with ... A: Lylah, John Borgman here, got this out of our question pool. It sounds to me like the compressor ...
T-stat mystery	9/20/2009
Q: I have a central a/c system and the temp stays pretty much even with a 1 or 2 degree differential ... A: Marshall, John borgman here got this out of our question pool. So when you have it set at 78, ...
Residential A/C question	9/17/2009
Q: I have two identical residential 2ton split A/C units. They are 16 years old, Goodman, and use ... A: Tom, I would have the N.A.T.E certified tech check the other unit since he also added to it, it ...
increasing aircon efficiency	9/17/2009
Q: Mike , i am involved in a green building information , education and supply operation on the island ... A: Stephen, You are correct about the conduction of water over air, it is 8 times as efficient. As ...
Residential A/C question	9/17/2009
Q: I have two identical residential 2ton split A/C units. They are 16 years old, Goodman, and use ... A: Tom, I don't know where to start with you, except, holy cow!!!!! You are so over charged you are ...
Blower works for 30 minutes then locks	9/15/2009
Q: I have a Lennox dual climate AC unit and had issued today with the temperature being warm in the ... A: David, You either have a bad condenser fan motor or more likely a bad run capacitor. When the ...
Freon leak	9/15/2009
Q: My upstairs HVAC system has a slow leak. It is seven years old and the evap. coil was replaced in ... A: Rene', The freon can leak from anywhere it runs through, but on a unit as new as yours, the first ...
Fixed vs variable speed ac	9/14/2009
Q: I've been given varying opinions concerning fixed vs variable speed ac units. Seems it's a 50/50 ... A: Mike, Sounds like you are doing your homework, although, I have no clue as to the lightening ...
Trane XL 1200 super efficiency weathertron heat pump	9/14/2009
Q: About a week ago our outside heat and air unit stopped cooling,and the fan of the unit wouldn't ... A: David, Here is a link as an example. Google trane parts for your area and you can find a dealer ...
a/c leak	9/13/2009
Q: I took out the filter to clean it. I had turned off the A/C and had it turned off for several hours ... A: Gaby, I assume you removed the filter due to it not working, is that correct? And the filter was ...
Lennox AC unit	9/11/2009
Q: I had a technician come out to my home today. We bought our home new about 2.5 years ago. Our ... A: JC, I would not trust this man to work on your equipment. First, his statements about the filter ...
hvac...freon leak	9/11/2009
Q: john, I have an older central a-c unit. it works great, but it has a freon leak. The tech who ... A: Mike, If the leak is that big, the only way to do this is as follows. Fill the now almost empty ...
More on residential AC Dye Test/Leak	9/9/2009
Q: I had a local HVAC company come to find out why my Amana 2.5T central AC system was not blowing ... A: David, Not a clue as which light because it is the wrong thing to do to a system, so I haven't ...
Low Cost Options to fix compressor	9/9/2009
Q: I have a 2.5 ton Comfortmaker outside system with a frozen compressor. I asked about if I could ... A: Clark, You have till January to replace the whole unit with another R22. After that compressors, ...
Brand New Condenser Burned Out	9/9/2009
Q: I really need some help. I bought a new condenser for my house two months ago and it quit running ... A: Cheri, Wow. I don't know what to say tactfully. There is no way that a 3.5 ton condensor should ...
Selecting Thermostat for Heat Pump	9/8/2009
Q: I am seeking to replace my existing thermostat which isn't digital. I have a Carrier Heat Pump ... A: Mitch, I recommend a t8000 honeywell. It has an adaptive intelligent recovery that controls your ...
Gas Ducted heater lockout	9/8/2009
Q: My Dad has a "Stadt" brand gas ducted heater. Last night it stopped working so I had a look. The LED ... A: Greg, Howdy from the USA. Although we do not have that brand here, they all have the same ...
4 ton Trane xl16i isn't doing the job.	9/8/2009
Q: I’ve been thinking a lot about the AC pad and how the condensers are arranged. I measured the area ... A: I didn't say 20 percent should be recycled, I said that the air discharged is at least 20 degrees ...
Quote for the new HVAC system	9/8/2009
Q: Good morning John, I am in process of purchasing a new home in Houston, TX and I am in need of the ... A: Ismar, You are correct about the R410a and if you plan on being in your home for 15 years, you ...
4 ton Trane xl16i isn't doing the job.	9/8/2009
Q: I’ve been thinking a lot about the AC pad and how the condensers are arranged. I measured the area ... A: A.J., 9 or 10 will also work for the 2 ton. Moving them will help, although the 4 ton is still ...
choosing a gas furnace	9/8/2009
Q: Any general advice on choosing among Carrier, Lennox, or (much cheaper) Goodman for a ... A: Ted, No Goodman. carrier and lennox are good equipment, personally I put a Trane in my mothers ...
TRANE XL 1200 Humming Noise	9/7/2009
Q: I have an outdoor unit TRANE XL1200 Super Efficiency Air system. All appears to be operating ... A: Ben, You should check the model of that unit, because there is nothing in a straight condenser ...
Thermostat wiring	9/7/2009
Q: I am replacing a contour comfort control thermostat with an Ace hardware brand programmable one and ... A: Mark, Rh,Rc jumpered=red G=green W=white Y=yellow O=orange....this is your reversing ...
air duct cleaning	9/7/2009
Q: I am planning to have my air ducts cleaned and would like to know how to find a company which will ... A: Edward, Your return air should be metal, that is not code and can hold mold in the cardboard. ...
Zone Controller, Low Air flow, and Discharge Temp Sensor	9/7/2009
Q: I just replaced a 10 year old 5 ton York heat pump and air handler and 2 simple thermostats with the ... A: Walt, I cannot help you. I work full time and volunteer 20 to 30 hours a week on here and do not ...
TRANE XL 1200 Humming Noise	9/7/2009
Q: I have an outdoor unit TRANE XL1200 Super Efficiency Air system. All appears to be operating ... A: Ben, I am going to assume you have the heat pump model as you did not say. As such, it sounds ...
Limit Switch	9/6/2009
Q: I had tried to repair the old one which made the condition much better but it still happened a few ... A: Faith, Insist on finding techs that are N.A.T.E certified and this time, if it is not resolved, ...
Zone Controller, Low Air flow, and Discharge Temp Sensor	9/6/2009
Q: I just replaced a 10 year old 5 ton York heat pump and air handler and 2 simple thermostats with the ... A: Walt, Before we address your questions......Bad move with downsizing a 5 ton condenser, with a 3 ...
Limit Switch	9/6/2009
Q: I had tried to repair the old one which made the condition much better but it still happened a few ... A: Faith, First lets address the first guy that worked on it. There is no such thing as a pain in ...
Trane XE1000	9/6/2009
Q: My unit is 12 yrs old and told the coil needs to be replaced - have had a freon leak for many years. ... A: Christine, Did they show you the leaks? How did they find them? If they only used an electronic ...
Limit Switch	9/6/2009
Q: I had tried to repair the old one which made the condition much better but it still happened a few ... A: Faith, I remember you, yes. So, this is happening when the heat is not being used? Did the old ...
AC?heat pump operation	9/5/2009
Q: When I turn my unit onto heat mode all works fine and heat comes out. Then in a little while the ... A: Rich, Your thermostat has 2 stages of heat, the first for heat pump, the second for aux. heat. ...
A/c fan inside will not come on	9/5/2009
Q: The blower in my squirrel cage quit working properly the other day. I purchased a new switching ... A: Mike, I don't know what you are describing as a switching relay? Is this an electric or gas ...
Trane XE1000	9/5/2009
Q: My unit is 12 yrs old and told the coil needs to be replaced - have had a freon leak for many years. ... A: Christine, I assume you are talking about the indoor coil? You should still have 10 to 15 years ...
ac/furnace blower motor	9/4/2009
Q: ..I have an old luxaire pcsu-ld08n065b serial number ecwmo84759. The blower motor when the ac is ... A: Jason, Almost all blower motors are 1075 rpm. On the side of the motor there is a name plate that ...
4 ton Trane xl16i isn't doing the job.	9/4/2009
Q: Question; what are some simply thing I can check to insure my systems are providing peak operating ... A: AJ, The first thing we want to look at is if they are set up correctly as far as the charge and ...
Outside coil went out	9/4/2009
Q: I have a split system HVAC. My outside coil just went out and I tried the breaker but that didn't ... A: No if the disconnect is a breaker and it and the one in the panel are in the on, not tripped ...
Outside coil went out	9/4/2009
Q: I have a split system HVAC. My outside coil just went out and I tried the breaker but that didn't ... A: Hey Alex, The outdoor A/C unit is called your condenser. If the indoor blower comes as it should ...
which product	9/3/2009
Q: We need a new HVAC system put in. Which brand is the best. Trane or Carrier? ANSWER: Jan, I ... A: Jan, Ask him how he knows that, as this new refrigerant has only been in place for a few years. ...
which product	9/2/2009
Q: We need a new HVAC system put in. Which brand is the best. Trane or Carrier? A: Jan, I prefer Trane it is what I put in my mothers house due to the dependability. Cost a little ...
ac/heat thermostat setting	9/2/2009
Q: how should a thermostat be set when a two story house has 2 ac/heating units if we want temp to be ... A: The first thing you need to do is change your air filters. If they get too clogged your equipment ...
Air handler-air conditioner	9/1/2009
Q: I have a five year old rheem blower and a 30 year old compressor that is busted. I assume I would ... A: Al, Your indoor unit is fine, you should get 25 years out of it anyway. The question to ask ...
cracked pan	9/1/2009
Q: my uncle is an hvac guy - don't know his exact title but he told me I have a cracked pan and we ... A: Kelly, Wow, what a nice comment. I hope it works out for you, if not give me a hollar
my centrail air conditioner does not turn on	9/1/2009
Q: I have a comfortmaker snyder general central air. the thermostant works but no cool air coming from ... A: Joe, Kinda curious how you decided that the thermostat works. First of all, lets assume it ...
Rheem RGDG Won't Start or Run	9/1/2009
Q: I have a Rheem RGDG Criterion. I tired to check it out this evening, and noticed corrosion on the ... A: Scott, I don't remember where on that model furnace it is, but there is a ledger that tells what ...
Goodman Gas Pack	9/1/2009
Q: I have a new Goodman Gas Pack - 14.50 seer. When the compressor kicks on, I hear a vibrating noise ... A: Liz, Ok, so you replaced an old unit or is this a brand new install, duct work and everything? If ...
Old Attic Fan	8/31/2009
Q: My house was built in 1941 in Springfield, MO. It is a two-story house and on the 2nd floor in the ... A: Linda, You don't see many " whole house " fans anymore, I have only seen one in the last 27 years, ...
Coil Leak--Lennox Elite 12 CB30M	8/31/2009
Q: I had my a/c company come to the house this morning to do their semi-annual a/c maintenance visit. ... A: Robert, An evaporator coil does not leak under normal wear and tear in 8 years and if it does need ...
Vent location	8/31/2009
Q: We're about to have some work done in our house and have a chance to relocate our AC exhaust vents ... A: Mike, Yes the "supply" vents should be about 6 inches from the exterior walls and over the largest ...
inside coil	8/30/2009
Q: I am buying a 6 year old used 4 ton condenser unit made by bryant and I have forced air I will need ... A: Michelle, It depends on what refrigerant it is, what seer rating, if you are going to use a cased ...
single stage vs double stage and...	8/30/2009
Q: -- 30+ yr old house, thermostat on first floor, occupants like a well cooled and dehumidified second ... A: Tom, There is only one true way to size your equipment. That is with a manual J heat gain/loss ...
Goodman Gas Pack	8/30/2009
Q: I have a new Goodman Gas Pack - 14.50 seer. When the compressor kicks on, I hear a vibrating noise ... A: Liz, How was it checked before it was installed??? If it is brand new the compressor can just be ...
Gas Furnace Recommendation	8/30/2009
Q: I have been getting estimates lately to replace a 30 yr old forced air gas furnace in my home and am ... A: Dave, wow lots of questions...smile Unfortunately your contractors haven't done a very complete ...
winterizing the gas furnace	8/30/2009
Q: John I have a high efficiency lennox elite series gas system,I am needing to know from a technicians ... A: Steve, First of all nice furnace. With the new inshot burners, heat exchangers do not clog as ...
York AC Unit	8/30/2009
Q: What is your opinion of the York. My AC contractor wants to replace my 20 year old Lenox unit with ... A: Marilynn, To be honest York is not one I would recommend. Hardly any one works on them of carries ...
ac not cooling	8/30/2009
Q: My ac unit is about 3 months old, but it works very good at night and early morning, and around noon ... A: Yanet, I will assume you are talking about a central air system. Get on the phone and have the ...
air conditioning and t-stat	8/30/2009
Q: I have a couple questions and I am really hoping you can help solve our dilemma. We purchased a 7 ... A: Beth, It sounds like you could have a few problems. First with the furnace kicking on and off, ...
Fan motor on the outside unit will not run	8/29/2009
Q: I have a RUUD, Model# UAMB-030JAZ. I looked at the capacitor but it doesn't seem swollen or ... A: Marvin, Since that model has a duel run cap, it is most likely the motor itself or the compressor ...
TXV	8/29/2009
Q: We called to have it looked at. The first service tech said the coils are plugged with cottonwood ... A: Thomas, Yes, you can fax him the info, although you might delete the word clown, even if it is ...
TXV	8/29/2009
Q: We called to have it looked at. The first service tech said the coils are plugged with cottonwood ... A: Thomas, I would call the owner of that company and complain. Obviously they do not know what they ...
heat pump	8/29/2009
Q: I have a package heat pump that one day it can not switch to cool it was working fine then only can ... A: Phillip, Still having trouble with the limited info, sorry. If I am following what you are ...
heat pump	8/29/2009
Q: I have a package heat pump that one day it can not switch to cool it was working fine then only can ... A: Phillip, Respectfully your question does not make sense. The reversing valve has nothing to do ...
cracked pan	8/29/2009
Q: my uncle is an hvac guy - don't know his exact title but he told me I have a cracked pan and we ... A: Kelly, Bryant is a carrier product and since you didn't say I assume that you are talking about ...
Rheem rrka-a036	8/29/2009
Q: I have a 10 yr old Rheem RRKA-A036jk06X A/C+heat unit on my roof. My problem is that I do not get ... A: Steven, Since you are handy with a volt meter this will make this easier. The high voltage first ...
CFM requirements	8/29/2009
Q: 2500 sq ft single story, 4 ton A/C required per manual J calc. Currently two 10" round returns, 1 ... A: Bob, this is a great web site for tinkering around with lots of questions in the hvac arena. As you ...
A/C Blower	8/28/2009
Q: My A/C blower motor has been coming on intermittently. The condensor is not on, nor is there a need ... A: Faith, If you have an older furnace, it might have a fan limit switch that is going out or if you ...
Gas water heater with air return directly behind in unfinsihed upstairs bonus room	8/28/2009
Q: We recently purchased a David Weekly home, finished in '03. Stair from the 1st to 2nd floor lead to ... A: Karla, I don not know the codes there but it cannot be legal to have a return air intake next to a ...
air conditioning	8/28/2009
Q: made a room and conected a 6" duct for the main register in the attic got cold air flowing but can't ... A: Manuel, It sounds like you need more cooling yes. But just increasing the duct size might not do ...
single stage vs double stage and...	8/27/2009
Q: -- 30+ yr old house, thermostat on first floor, occupants like a well cooled and dehumidified second ... A: Tom, In cooling whatever you choose will be on high speed and de humidifiing is part of the ...
Excessive condensation from A Coil	8/27/2009
Q: I have a split upflow central air unit in one of my rentals that yesterday flooded the utility room. ... A: Bill, First if you do not rinse that coil completely you will rot it out. Second another reason ...
R410a presures	8/27/2009
Q: I never had air conditioning in my house, so I just had it installed. It's a Trane condenser 3 ton ... A: Paul, You cannot go by just pressures on any system. The new R410a units, due to the different ...
Outdoor unit wires	8/27/2009
Q: We were weed eating around the outdoor unit and some wires came loose...we don't want to touch ... A: Renae, Going to need more info. First is it just A/C or a heat pump or package unit. Then it ...
Heating a basement	8/27/2009
Q: I have a 6 year old 2,400 sq ft ranch with a basement with 1,400 sq ft finished. I have ceiling ... A: Dan, First closing vents is not the answer, unless your duct system was over sized ( which I doubt ...
? no super heat?	8/27/2009
Q: i installed a 2ton heatpump system by bryant about a year ago. and always got 1-3 superheat. about ... A: Nick, First of all, you charge a R410a system by sub cooling, the characteristics are different ...
Residential AC Drainage	8/27/2009
Q: I live in a 2-story home built in 1995 with a Lenox AC system. There is some water in the drain pan ... A: Lional, That is a second line of defense and it is only used if there is a problem. Either the ...
Luxaire or American Standard HVAC	8/27/2009
Q: We are looking to replace our 17 year old HVAC system and have quotes from 2-contractors. One ... A: Joe, The American Standard, hands down. First because of the obvious more efficient A/C which is ...
central air clanging sound	8/26/2009
Q: When my central air turns off (as in when the temperature reaches the thermostat) it makes a sound ... A: Nichole, For one thing, if your evap coil was that clogged, now you have a lot more air flow and ...
Outside Central air unit ?	8/26/2009
Q: I have a 10 yrs old Comfortmaker Unit (FBAO36GC) that recently started to make a very loud noise. ... A: Yes, do not use it. There is only one way for this to happen on purpose and that is if you are air ...
payne airconditioner	8/25/2009
Q: i have a Payne aircondition unit and a totaline thermostat last night the low battery signal came on ... A: Steve, Is it calling for A/C? If so, check the breaker for the outdoor unit. If that's not it, ...
Outside Central air unit ?	8/25/2009
Q: I have a 10 yrs old Comfortmaker Unit (FBAO36GC) that recently started to make a very loud noise. ... A: Steve, I don't know if you are talking about the fan for the outdoor unit or the fan for the ...
need for 2 circuit board replacements in one month and frozen A coil	8/25/2009
Q: I have a 2 yr old Amana high efficiency furnace and a/c 3 ton. In June the a/c quit and A/C ... A: Jo, There are two reasons for the A coil to freeze. One is low air flow. ie. dirty filters, vents ...
New A/C not as cool	8/25/2009
Q: I just replaced a 20 year old Trane A/C with a new XR-15 Trane. The installers also replaced the ... A: Roger, More than likely, they did not evacuate the system properly or charge it correctly. Get ...
leak repair	8/24/2009
Q: I have a 3.5 ton outside carrier unit and a slightly larger Lenex unit inside. Had a slow leak of ... A: Sam, I wish you had contacted me first. The way a refrigeration system works and lasts is that we ...
furnace blower whistle	8/24/2009
Q: My gas furnace blower produces a loud whistle when it runs. Usually the whistle fades as the blower ... A: Ken, You are describing the draft inducer motor. It could be bearings or the small blower type ...
AC is barely blowing slightly cooled air	8/23/2009
Q: We have an Armstrong Ultra SX80 ac/heat system. In the last 3 days, we've had a dramatic 75% air ... A: Debra, Loss of air flow and other problems are from the indoor coil freezing up. It freezes for ...
window AC	8/23/2009
Q: I have been looking for a 220 Volt 8000 BTU Window AC because using a 110 volt overloads the ... A: Ed, I dont know the available window units, you might check at home depot as a start. The ...
blower cuts out	8/23/2009
Q: I have a York Diamond 80 res gas furnace. When I set the thermostat to ON the blower will start but ... A: Jamie, You are going to cause more damage than you already have if you do not get a tech out to ...
Replacing Drain Pan	8/23/2009
Q: We have a small amount of water leaking at the base of our indoor unit(Philco B3BM-036K) in the area ... A: John, Generally the pan does not have to be removed to put a new pan in, unless there is no room ...
Goodman pgb042100-1	8/22/2009
Q: Late yesterday afternoon our ac quit working the condensor fan is not turning and the unit is giving ... A: Sandra, That is one that you need a .tech to come do some checking. It could be a board or motor ...
Rheem/condensor fan stops compressor still running	8/22/2009
Q: Here is my problem(s)I have a 1 1/2 ton Rheem (split system )installed in 99 my fan was stopping and ... A: Robert, There was probably nothing wrong with the other motor. Sounds to me like a bad run ...
410A Pressure Temprature Chart	8/22/2009
Q: I have a technical question about 410A and pressure temperature charts and i really need some help. ... A: Yes that is correct, but the 10 to 20 is minimum and maximum of units that are made today. ...
410A Pressure Temprature Chart	8/22/2009
Q: I have a technical question about 410A and pressure temperature charts and i really need some help. ... A: Dharmen, That is not the correct method for charging and temperature refrigerant, even under ideal ...
central air unit	8/22/2009
Q: Ok...during the day today me and the wife noticed it getting hot. I thought the air was turned up so ... A: Ronald, If all you vibrated by hitting the indoor blower motor was the motor, then it either has a ...
Portable Air Conditions for spot cooling	8/18/2009
Q: I recently purchased a used Sunbeam KY 25Y Portable Air conditioner rated at 9000 BTU. It is three ... A: Sharon, How? The leveling part......You will need a small level and then lay it on all sides of ...
_price@yahoo.com	8/18/2009
Q: John I have a carrier central air unit , i push in the contactor the fan and compressor kick on ... A: Chris, You work in the field? I love helping other service or installers. Two things....One ...
No air flow when a/c comes on	8/18/2009
Q: my central air outdoor unit comes on like it should when the thermostat clicks it on but I'm not ... A: Chris, Do you have a volt/ohm meter and know how to use it? If not you are going to have to call ...
New installation of electric furnace and heat pump	8/17/2009
Q: Asked too many questions. So just one more. You said in your last answer "But, with this new info, I ... A: Connie, You did not supply all that info....smile. So, I assume you mean the large copper pipe ...
A/C unit not cooling	8/17/2009
Q: .. I have a Sears High Efficiency Central Air Condition, Model #769-81602. The unit is having ... A: Jim, If all the vents in the house are open and you have a clean filter in, let it run for ten ...
Amana problem	8/17/2009
Q: We have an Amana furnace that is about 7 yrs old and isn’t working. We had our vents cleaned last ... A: Nicole, Unless it is a fluke, I would suspect the duct guy did something unintentionally ( I would ...
No air flow when a/c comes on	8/17/2009
Q: my central air outdoor unit comes on like it should when the thermostat clicks it on but I'm not ... A: Chris, First thing to try is put it in heat mode and call for heat and see if the blower comes on ...
Newly Installed Electric Furnace and Air Conditioner	8/17/2009
Q: I live in a 20-year old, 3 story 1300 sq. ft. condo in Cincinnati, OH. (It has a walk-out basement, ... A: Connie, Sorry for the lack of professional help you received. It would not matter how it shorted ...
Newly Installed Electric Furnace and Air Conditioner	8/17/2009
Q: I live in a 20-year old, 3 story 1300 sq. ft. condo in Cincinnati, OH. (It has a walk-out basement, ... A: Connie, If you had a 20 year old payne, then the duct work must have been ok for it, to last that ...
air conditioner problem	8/17/2009
Q: my home air conditioner unit only shuts off for 3 minutes at a time, then runs for at least 10 ... A: Jerry, If you have an old mercury bulb tstat, the anticipator might need to be set or it is worn ...
Central Air Conditioner Not Working?	8/17/2009
Q: Today we noticed that our house was no longer getting cool. We are "total electric." We have an ... A: Carista, The cap could still be bad, even without visual signs, but it sounds like the motor is ...
ac/furnace	8/16/2009
Q: We have a Luxaire furnace that we believe is original to our 1977 house we bought 3 years ... A: Kim, Yes the blower motor of that age is an oil port motor. The problem with doing it yourself is ...
heat pump and air handler	8/16/2009
Q: ..we are considering replacing a 31 year old air handler. our american standard 21/2 ton heat pump ... A: Jay, Personally I would replace it due to age, even though it will do the same job as a new one. ...
split system ac unit	8/16/2009
Q: recently installed new condenser outside,2 1/2 ton,transformer has tripped several times,it also ... A: Chuck, Who the heck is working on your equipment....a roofer. Sounds to me like the old unit ...
placement of heat pump return air vents	8/16/2009
Q: I have 2 return air vents for my heat pump. One at floor level in the hallway wall and one in the ... A: Robert, That will not make any difference in your bill. It sounds like you have one of two ...
zone cooling	8/16/2009
Q: Have a Bryant 4 zone perfect plus. It will not respond to inputs. Two zones may be shut out or hold ... A: Randy, Sounds like there are some crossed wires to the zone dampers. Here is the easy way to fix ...
3 year old tempstar evap coil	8/10/2009
Q: I purchased and had installed a brand new Tempstar heat pump / AC unit three years ago when I bought ... A: Justin, Yes you are. Any tech should have come, gauged up and started the system. If there is a ...
air handler problem	8/10/2009
Q: About 3 years ago I had a problem where the outside air compressor was working (and all iced up) but ... A: Paul, You have either and air flow or refrigerant flow problem. All vents open? Clean filter? ...
a-coil selection	8/10/2009
Q: Is it ever okay or desirable to mis-match the a-coil and the condenser unit? Long story ... A: Chris, The only time to run a larger coil is with a heat pump using the new r410a refrigerant and ...
Miller Outdoor Heat Pump Unit	8/10/2009
Q: The fan to my outdoor unit will not turn on. You can hear power going to the unit, but nothing is ... A: Jenny, Well if you have a new defrost control board, then it is probably the motor or the run ...
air conditioning/furnance	8/9/2009
Q: Sometime this afternoon our house started heating up and we found later that while it sounds like ... A: Brian, sounds like your indoor coil is frozen. So, turn off the system switch and turn on the fan ...
t stat question	8/8/2009
Q: I have a trane heat pump unit. I think it has a 15kw heat strip in it. I have a hunter touchscreen ... A: Travis, The first thing to do is have a tech gauge up and probably adjust your refrigerant level. ...
Fan motor not running	8/7/2009
Q: I have a 2 1/2 ton Lennox that is making a hissing noise down around the base of the unit and the ... A: John, What was done about the line? The hiss can be one of 3 things. First, a leak, which if it ...
Quietest Attic Air Handler Installation	8/7/2009
Q: Good Morning, I will be installing a split geothermal system in a ~ 1500 square foot 1928 colonial ... A: John, In theory it sounds nice but air does not move like water. It actually needs the back ...
Furnace door won't stay shut	8/7/2009
Q: I have a mystery regarding the front panel/cover on my furnace. My furnace (air conditioning) has ... A: Jesse, Your furnace might have these 1/4 square black pieces where the doors come together with a ...
blower motors	8/6/2009
Q: We recently replaced our blower motor in our gas furnace with one identical to the old one. Here are ... A: Chanda, On the small plate that you remove to get to the wiring is a schematic, that shows what ...
Heat pump package unit	8/6/2009
Q: We have a 22 yr. old 3 ton Rheem or Rudd heat pump package unit that we're looking to replace. What ... A: Kim, Stay away from the Ammana. You got over 2 decades with the prior equipment, why change that. ...
New AC unit compressor on and off while outside fan running	8/6/2009
Q: We purchased an AC unit of Kenmore model H4A448GKB100 in Jun 2008 and Sears’s contractors ... A: Sam, As you have found out, it is not the equipment but the installation that is the problem. In ...
Carrier heat pump	8/6/2009
Q: My a/c unit is not cooling properly. The condenser is running and the fan seems to be running. The ... A: Debora, do this test. Remove the air filter ( just for this test ) have every air vent in your ...
heat pump and air handler	8/5/2009
Q: ..we have a 5 year old 10seer american standard 2 and 1/2 ton heat pump, that runs good. our air ... A: Jay, Although as of January they will no longer produce equipment using R22, the refrigerant and ...
blinking amber light	8/5/2009
Q: Concerning an american standard freedom 80 single stage gas furnace...there is an amber blinking ... A: Patty, If you remove the door on the blower compartment( there are two doors, one for the burner ...
AC CONDENSATE	8/5/2009
Q: Recently I noticed water dripping from the RELECTIX insulation that covers the ducts and coil that ... A: Joe, Whenever a system is zoned, as each zone is satisfied and the damper closes, there is a large ...
heat pump low voltage	8/4/2009
Q: i have just installed a new goodman 3ton heat pump with matching coil to a intertherm down draft ... A: Scott, TSTAT FURNACE HEAT PUMP R=RED R=RED R=RED C=BLACK ...
Return air grill condensation	8/4/2009
Q: Recently I have noticed that when I get up in the mornings my return air grill is dripping with ... A: Mick, It is because of humidity and dew point, the temp drops just below it at night because of ...
cooling problem	8/4/2009
Q: I been having a problem with cooling, I recently graduated from an AC refrigeration school but, I'm ... A: Robert, What is you dry bulb return air temp and what is your liquid temp? I dont know where you ...
evap coil drain	8/3/2009
Q: John, Finally lit off our split system (Frigidaire) AC unit to temper the summer heat. The unit is ... A: Tim, Yes those things happen. If you fill the drain pan with water with the unit off, you should ...
AC unit Dead	8/3/2009
Q: 2yr 13 Seer Johnson Fraser(YORK International) AC unit dead.The fan outside will not come on. It is ... A: Katilina, Phone any company that is reputable for the work. It wont be just the compressor, if it ...
AC CONDENSATE	8/3/2009
Q: Recently I noticed water dripping from the RELECTIX insulation that covers the ducts and coil that ... A: Joe, First you say zones? Do you mean area's? Zoning means that those ducts have dampers that ...
wet spots on exterior stucco	8/2/2009
Q: I just recently purchased a 7 year old house. I noticed that whenever I run the AC unit, I notice ... A: Rob, If the secondary pipe does not exit the structure it should be finished. I don't know where ...
New AC Unit dead after 2 days - same problem as before.	8/2/2009
Q: I recently had my entire unit replaced through a home warranty claim. According to the tech, the ... A: Kirk, I can almost promise you are out of or low on freon. Any " tech " that has trouble sealing ...
Water pouring out of furnace	8/2/2009
Q: We just bought a new house in MD and when we run the AC water flows out from below the furnace. Is ... A: David, There are a couple reasons for the water. One would be a clogged drain from the drain pan, ...
Central Air unit	8/1/2009
Q: Yesterday I heard water rushing and discovered water coming out of my Central Air Unit (Goodman ... A: Angie, The pan can be purchased by itself. It can also be repaired, depending on where it is ...
Isolating 24v transformers	8/1/2009
Q: Was just up in your neck of the woods (Portland) this week ...guess you've been busy with the heat ... A: Mike, First of all, yes that is what is called a peanut relay. You had indicated you wanted the ...
Isolating 24v transformers	8/1/2009
Q: Was just up in your neck of the woods (Portland) this week ...guess you've been busy with the heat ... A: Mike, Yes if the de-humidifier has its own 24 volt system you will need to isolate it. The ...
AC Unit	8/1/2009
Q: Bought a new house 1 yr ago. Turned on the AC in the house for the first time this summer and it was ... A: Matt, Compressor??? What compressor? In your unit? To be honest 300 sounds too cheap. If you ...
Unico loss of cooling	8/1/2009
Q: I am in the construction business and ask this question with a little knowledge of things. We have ... A: Dana, I actually guessed that part, kinda. But I am familiar with unico and do not know what to ...
sp80 tampstar	7/31/2009
Q: the fan doesn't come on went you turn the ac or heat on. i have power A: James, Are you talking about the blower? It is in the furnace and moves the air in the house. If ...
Air conditiner warranty	7/31/2009
Q: Carrier 2-ton residential ac model 38ckc024340. Installed 4 years ago for use in our small office ... A: Judy, Warranty will not cover new unit. And if you have had an electrical burn it could cost as ...
AC Unit	7/30/2009
Q: Bought a new house 1 yr ago. Turned on the AC in the house for the first time this summer and it was ... A: Matt, It is very very rare for the outdoor coil to have a leak. I have to assume he came out, ...
LENNOX HP CONDENSER NOT RUNNING	7/30/2009
Q: i have an 11 year old Lennox heat pump. About a week ago, the blower motor burnt up so we replaced ... A: Cassie, You should check the breaker for the outdoor unit. There also might be slow blow fuses in ...
Clean an A-Coil	7/30/2009
Q: I know that you can trap the freon in the condensing unit so you can cut the lines and remove the ... A: William, You should be bleeding nitrogen when brazing and I would use silfloss or silbraze, then ...
GOODMAN AC HANDLER BLOWER INOP AT TIMES	7/30/2009
Q: MR. BORGMAN, I HAVE A 2 STORY HOUSE WITH 2 SEPARATE AC/HEAT SYSTEMS(I BELIEVE THE AC HANDLER #'S ARE ... A: John, If that furnace has a deadman switch ( when you open the blower door it pops out and kills ...
Portable air conditioner shakes and sputters	7/30/2009
Q: I have a portable sunpentown air conditioner, and it does this new thing I haven't seen before. In ... A: Carrie, Well, there are only a couple moving parts so it has to be either the compressor motor or ...
Installation of Fan Timer Control Board	7/30/2009
Q: I need to replace the fan timer control board in our Comfortmaker HVAC system. The board is ... A: Sam, No hidden power issues with that. Most boards are a wire for wire change, but some boards ...
Compressor cuts out	7/30/2009
Q: I have a 10,000 btu window unit that usually cools my entire (small) apartment. When it gets around ... A: Joseph, There is not a lot you can do except to position a mist head on a garden hose and have it ...
new ac	7/29/2009
Q: I am an ac dummy. My home ac unit just went out-compressor I guess. It was 26 years old and just ... A: Stephanie, Since I do not know if the indoor air handler is a furnace ( electric or gas ) or what ...
AC system keeps breaking down	7/29/2009
Q: I have a 5 year old home/AC units. The upstairs unit has been breaking down for 1 year. 1.5 years ... A: Stephanie, John borgman here, I got this out of our question pool. If it was a return air vent ...
hvac first floor units	7/28/2009
Q: i have a 1940's 3300 sqft property which i am renovating in Houston TX and a hvac rep has ... A: Tim, As far as building it in, just make sure that whatever is covering the furnace doors can ...
Clogged AC drip pan	7/28/2009
Q: Can i fix a clogged drip pan on my AC unit relatively easy or do I need to call a professional? ... A: Sue, it depends on how the coil was installed. If it is a cased coil, with a factory door, and it ...
Filter	7/27/2009
Q: Our air conditioner has frozen up and I removed the panel to see what things looked like in ... A: Cammy, If there is no filter in the furnace or the return air grill, then your indoor coil and the ...
York Heat Pump, Emergency Heat Light	7/27/2009
Q: Good Day: Thank you for your time! We have an old (at least 15 year old) York heat pump with a ... A: Brad, you will need a tech to come out. Those Yorks are hard enough for a tech to work on. It ...
heat pump	7/27/2009
Q: For a long time I would have to turn the thermostat on and off several times for it to come on. I ... A: Tedd, Get a service tech out there before you burn everything up. You cannot let the smoke or the ...
Window Air Conditioner ducting to furance ?	7/27/2009
Q: I live in Nova Scotia, Canada. I currently have a forced hot air furnace for heating my home. The ... A: Larry, you wouldn't get that much done by that method. You would be better off, just mounting a ...
rewiring 3 terminal capacitor to 2 terminal capc.	7/27/2009
Q: I replaced the condenserfan motor which comes with 7.5/370v run capacitor that has two terminals ... A: George, The two brown wires are for you run capacitor, which should ALWAYS be replaced when ...
hvac first floor units	7/27/2009
Q: i have a 1940's 3300 sqft property which i am renovating in Houston TX and a hvac rep has ... A: Tim, If you asking if a upflow furnace in the basement, to service that floor and the main floor ...
INOP Central Air	7/26/2009
Q: I have a Central air unit that is working but not cooling . the unit outside is on the one in the ... A: Nelson, First you need to check the air filter and for this test, go ahead and remove it from the ...
ac intake (return)	7/26/2009
Q: We have a 4 ton central ac and are going to have a 5 ton installed (which was determined by a load ... A: Connie, First increasing by a ton is quite a bit. Was this calculated by manual J, room by room ...
Rudd ac unit	7/26/2009
Q: Honeywell FocusPro 5000 set at 70deg. and inside temp. got up to 84deg. yesterday. Fan outside just ... A: William, Sounds like you are talking about the condenser fan motor and if it is turning slowly it ...
Air Flow to a Bedroom	7/26/2009
Q: When I had my system installed several years ago, I asked for a little bit of increased air flow to ... A: Brian, Probably the easiest way to do what you want is to blank off the collar coming from the ...
Bryant Air Conditioner Unit Installed 1992	7/25/2009
Q: Mr. Borgman, I have a Bryant heating and air conditioner system in my house. It was installed when ... A: Lewis, So was this tech from the same company? I am still not comfortable with the 30 day thing. ...
refiregrant leak	7/25/2009
Q: I recently found out I had a leak in my system. The system is a year old and I recently had a coil ... A: You didn't tell me it was a R410a system. But the numbers you sent me tell me so. Problem is that ...
ac ceiling vent	7/25/2009
Q: We are looking at buying a house and the is one annoying little problem I want to be able to fix to ... A: Kate, OK, here is what is up there, when you take the two screws out of the louvered register ...
Air Flow to a Bedroom	7/24/2009
Q: When I had my system installed several years ago, I asked for a little bit of increased air flow to ... A: I am thinking, that they on purpose ran that run straight from the plenum to give you plenty of air ...
Air Flow to a Bedroom	7/24/2009
Q: When I had my system installed several years ago, I asked for a little bit of increased air flow to ... A: Brian, Was that where the original run was from? I have never heard of 4" unless it is a high ...
AC won't cool/ Freon Leak/Condensing Coil	7/24/2009
Q: About 5 days ago, our air conditioner quit cooling the house. We would set it at 76 and the house ... A: Sally, Hi, me again. How did he show you the leaks? If he showed you with an electronic ...
duct cfm	7/24/2009
Q: I was the one asking about charging a sysyem with refrigerent, and yes I'm in thr field, currently I ... A: Brian, Practically you cannot. There are some pretty heavy mathematical equations for that, but ...
Whole house fan	7/24/2009
Q: Our whole house fan went out after 18 years so we replaced it with a flow master we purchased from ... A: Mary, I really do not know what the right side means. But if you are having an issue with a Home ...
refiregrant leak	7/23/2009
Q: I recently found out I had a leak in my system. The system is a year old and I recently had a coil ... A: Vadim, If it holds at 400 psi, then there is not a leak where they are testing. My question would ...
removimg a gas furnace	7/23/2009
Q: I need to remove a furnace and cap off a gas line in order to have a heat pump/air conditioning unit ... A: Larry, No, you covered everything. Actually you might get a little smell, but you can dump a ...
PAYNE model PA10, have to keep replacing fuse	7/23/2009
Q: i bought my home in 2003 and had continuous problems with the air conditioning unit since the ... A: Joy, If you are having the same problem as you had with the old unit you had replaced, then the ...
Armstrong electric furnace	7/23/2009
Q: I recently purchased a house with an Armstrong EFC12SAA electric furnace. There is a whole house ... A: Christopher, If the coil for the humidifier is 24 volts, then you want to wire one side to 24v ...
contactor noise	7/23/2009
Q: The contactor at the outdoor unit growls momentarily before closing. I have 27 volts coming in to ... A: John, I am trying to teach you proper electrical troubleshooting , so you can do just that. You ...
sizing house	7/23/2009
Q: I was the one asking about charging a sysyem with refrigerent, and yes I'm in thr field, currently I ... A: Brian, For that, the first thing you need to do is get Manual J, either the book or computer ...
air con stopped working outdoor unit	7/22/2009
Q: i have a fuji electric rom-19ua2 outdoor unit and it has stopped working , the fan dont turn and ... A: Jim, I am afraid you are going to need a service tech, Jim. The sound could be the overload ...
contactor noise	7/22/2009
Q: The contactor at the outdoor unit growls momentarily before closing. I have 27 volts coming in to ... A: John, You mean you placed your lead not leads. And had the other lead where? Also is it a NO or ...
air conditioning	7/22/2009
Q: I have a 3 year old ameristar furnace by american standard and an american standard central air ... A: Shawn, OK, here is what we do next. turn off the power to the furnace either at the breaker or if ...
contactor noise	7/22/2009
Q: The contactor at the outdoor unit growls momentarily before closing. I have 27 volts coming in to ... A: John, So the low pressure switch on that unit is a normally closed?? You said it does not open ...
Bryant Air Conditioner Unit Installed 1992	7/22/2009
Q: Mr. Borgman, I have a Bryant heating and air conditioner system in my house. It was installed when ... A: Lewis, I almost hate getting ones like this......You might want to find a real tech to work on ...
Freon leaking	7/22/2009
Q: John, I asked a company to do my A/C tune-up today. The tech told me the freon pressure is low and ... A: Yong, The guy is not only very bad at his job, but either does not know what the montreal Protocal ...
Central Air in a Mobile Home	7/22/2009
Q: I hope this is not a repeat question but i have searched far and wide and can't find an answer that ... A: Matthew, There is supposed to be a " cross over duct " that connects the 2 sides of the mobile ...
Air Conditioning Won't Cool	7/21/2009
Q: Our house was built in 1998, apparently the builder put smaller units than is recommended. However, ... A: Erin, Yes it should work better. First I think that a cooler supply temp can be obtained, if I ...
HVAC New Home	7/21/2009
Q: Greetings: We are building a new home, 3 BR 2-1/2 BA, in Kitty Hawk, NC. Approx. 1900 sq. ft. ... A: Denise, With no attic the power exhaust fan is not an option. Sorry if what I said was ...
Freon leaking	7/21/2009
Q: John, I asked a company to do my A/C tune-up today. The tech told me the freon pressure is low and ... A: Yong, I apologize for the company that has that tech working there, you might want to phone them, ...
Vert or Horz loop	7/21/2009
Q: John, I appreciate your time. I will try to make this short. Dirt is dug on my property and I have a ... A: Chip, No I know of no reason for not going horizontal and respectfully would take a lot more work ...
TRANE Problem??	7/21/2009
Q: We have a 1-2 year old Trane AC and a programmable thermostat. Everything worked great yesterday and ... A: Alicia, Call your local Trane dealer asap, Alicia. That Trane has a 5 year warranty at the very ...
follow-up of your ans. to me of 7-13-09	7/21/2009
Q: Would your answer you gave be the same if the heat pump Would your answer be the same as to ease ... A: Mel, The evap. coil has nothing to do with the water source for the outdoor unit, unless you are ...
HVAC New Home	7/21/2009
Q: Greetings: We are building a new home, 3 BR 2-1/2 BA, in Kitty Hawk, NC. Approx. 1900 sq. ft. ... A: Denise, Well the second guy does not know how zoning works and if you use the first guy hopefully ...
Vert or Horz loop	7/21/2009
Q: John, I appreciate your time. I will try to make this short. Dirt is dug on my property and I have a ... A: Chip, I guess it is a good thing I am an expert, you gave no clue as to what you building...lol ...
Ac problems	7/20/2009
Q: My outdoor ac unit stopped running a couple days ago and after doing some research we decided to see ... A: T, You need to put an amp probe on the motor and see if the amp draw climbs along with the fan ...
Ac problems	7/20/2009
Q: My outdoor ac unit stopped running a couple days ago and after doing some research we decided to see ... A: T, It sounds like you wired it wrong and got two of the leads reversed, although that wouldn't ...
flame sensor location	7/20/2009
Q: Where is the flame sensor located on a 10 ton gas pac lenox ac unit A: David, John Borgman here, I got this question from our question pool. I am assuming you are a ...
Carrier control board	7/20/2009
Q: I have the info you ask for on the control board, remember I bough a control board with only one ... A: Robert, The BDP part number is .... CES0110057-02 If you do run across a situation where the ...
home a/c unit on roof	7/20/2009
Q: fan motor seized, got it replaced. unit then only cooled for about 20 min. was told compressor is ... A: ask your other person what an overload devise is and how it works. It is for emergency only and ...
thermostat	7/20/2009
Q: i have an Evcon unit about 2 1/2 years old. today my thermostat started blinking the following ... A: Ken, I do not take private questions and I did not know Evcon made a thermostat and I have no idea ...
HVAC sealed combustion return air	7/20/2009
Q: How close can a cold air return be on a sealed combustion unit? A: Brad, Are you talking about one that gets its combustion air from outside or in the room it is in? ...
water leaking in basement around heater / ac unit	7/19/2009
Q: Why is water leaking around our propane heater /AC unit?? A: Lynne, It could be a number of things, from a clogged drain line, to a faulty condensate pump, to ...
wiring	7/19/2009
Q: hi john im not sure weather u can help but its worth a try i can build small windturbines with no ... A: Fred, Are you watching the OPEN? Would love to come visit our mother country someday. There are ...
iced coil	7/18/2009
Q: Today I discovered that my indoor coil of my central air unit was heavily iced after running for a ... A: Vadim, Ther are 2 things that will cause the indoor ( evaporator ) coil to ice over. Low indoor ...
humidity	7/18/2009
Q: I noticed a question about cfms and you said that in a humid climate a small amount of cfm would be ... A: gerald, I don't think you read what I wrote correctly, if it was me. I answer hundreds of ...
air conditioner split system	7/18/2009
Q: I have a Coleman Evcon 3 ton R22 split system unit, this system is 10 years old. It is not cooling ... A: Steve, I would be glad to help you, but you need to give me better measurements. I need the ...
home a/c unit on roof	7/18/2009
Q: fan motor seized, got it replaced. unit then only cooled for about 20 min. was told compressor is ... A: Mike, 10 years is the cut off to look at a case by case business, but doesn't mean it can not be ...
heat pump gets ice	7/18/2009
Q: I answer on allexperts in 5 other categories, but am not an expert on HVAC. My heat pump worked fine ... A: Dave, Probably Dave. Low air flow or low refrigerant flow are the 2 reasons for that. With the ...
imbalance of air flow	7/18/2009
Q: we have a couple vents that are blowing very hard and barely any flow going to the rest of house. I ... A: Robert, You really need a tech there to get that straightened out. Air does not flow like water ...
multimetering	7/18/2009
Q: first it seems like my t-stat when i change something is turns off and then maybe turn back on, like ... A: Kenny, Your step down transformer gets 120 volts from the grid and supplies 24 volts to the hvac ...
a/c compressor	7/18/2009
Q: unit o/s 21/2 ton, air handler 3 ton i notice the o/s unit starts without the compressor but ... A: Len, You cannot change the motor, first they all come in the same rpm 1075 and if you reduce the ...
AC return air location	7/17/2009
Q: I am trying to determine is the building dropped ceiling hot air return vent is in the right ... A: Debbie, Since the A/C was not sized for the heat from a server room, no. You should let the spot ...
AC not removing humidity	7/17/2009
Q: John, I have a 20 year old Trane AC unit which recently had 3lbs of freon added. After that for ... A: Robert, What does high amps mean? There is a clearly marked rating on the name plate of the ...
thermostat not shutting off AC	7/17/2009
Q: Two days ago had the outdoor condenser of refrigerated AC moved to roof due to a coolant leak ... A: Jeannine, Why in the world did you move it to the roof...because of a leak?? Never heard of such ...
Tuneup on a AC Unit	7/17/2009
Q: I bought a house 2 years ago and the ac unit is 8 years old, I am looking at getting a tune up on ... A: Marc, You need to have a tune up and I would be surprised if the contactor is still good, but ...
propane heater	7/16/2009
Q: My neighbors burner on her heater for her house seems to plug up with some sort of foreign stuff. ... A: Pete, No, propane is usually as clean as natural gas. The burner gets plugged either by a not so ...
AC compressor will not shut off	7/16/2009
Q: I have a 10 year old, 3 ton, electric AC unit. I had a small leak in the outside unit about a ... A: Krista, It is one of two things. Less likely your low wiring is either not wired correctly at the ...
clicking in our central heating and air	7/16/2009
Q: I read a questions from someone else that sounded alot like my problem so here goes. Our mobile ... A: Sue, You are going to have to provide me with more info than that. Where is the clicking? What ...
gas heating	7/16/2009
Q: I have a 24 x 30 garage with 9' ceilings that I want to heat with natural gas. Could you please tell ... A: Robert, Yes and that is assuming you have very little or no insulation everywhere else besides the ...
Wiring new Condensor fan motor.	7/16/2009
Q: I came across this forum as I was digging through information on replacing the condenser fan motor ... A: Kevin, Do not run it that way you will burn up the motor. You do not have the run cap working and ...
gas heating	7/15/2009
Q: I have a 24 x 30 garage with 9' ceilings that I want to heat with natural gas. Could you please tell ... A: Robert, It depends on the insulation and if you have a standard opening garage door for the size ...
Wiring new Condensor fan motor.	7/15/2009
Q: I came across this forum as I was digging through information on replacing the condenser fan motor ... A: Kevin, Actually it is refreshing to get more than " my a/c quit whats wrong...lol" The first ...
hvac air flow	7/15/2009
Q: 3rd yr in a row my hvac runs all day til evening, then sweats & leaks under coil & sometimes after ... A: Jen, I understand your frustration, believe it or not I feel the same way on calls I go on and ...
hvac air flow	7/15/2009
Q: 3rd yr in a row my hvac runs all day til evening, then sweats & leaks under coil & sometimes after ... A: Jen, You only gave me a rating of 8 on knowledge?
A/C frozen coil/bad compressor/TXV	7/14/2009
Q: We have a Trane heat pump, new 3.5 years ago (installed to heat/cool an addition to house). Two ... A: Sybil, First, In an air conditioner, the indoor coil sits in the air stream and liquid refrigerant ...
increasing hvac air flow on existing unit	7/14/2009
Q: I just purchased a single story home 1700 sq ft with a 5ton unit in the attic and 5ton condensing ... A: Spencer, I need more info to help..1000 cfm return???? I need to know the return air plenum size, ...
Location of return air duct.	7/14/2009
Q: My house currently has 8 (13.75" x 7.75") return air ducts, 4 each on the first and second floor. My ... A: Cutting a hole in it will not increase its size!!! And if your duct work collapses now, more air ...
Location of return air duct.	7/14/2009
Q: My house currently has 8 (13.75" x 7.75") return air ducts, 4 each on the first and second floor. My ... A: Kim, First, how did your old equipment do before it failed? Second if you increase the tonnage ...
Trane Air conditioner unit	7/14/2009
Q: I broughta Trane 2TTX5030A1000AA heating and airconditioner unit from a local company in arkansas. i ... A: I am assuming you might have a duct problem, as, the dripping copper pipe says that the air flow and ...
Bryant central unit-Ruud outside fan	7/13/2009
Q: Outside fan works but I do not know how to tell if the air is warm enough coming out of it off the ... A: Don, No, it sounds like you are describing a problem with the blower motor. Do Not turn it on ...
HVAC works, inside fan motor will not come on	7/13/2009
Q: I recently went into the furnace, pulled the covers and changed the filter only. Put the covers back ... A: Steve, The outdoor unit does not blow air inside, it moves refrigerant inside. The motor below ...
Freon Problem?	7/13/2009
Q: Hey I have a VEXAR Coil unit heating my mobile home. I paid a guy $100 to come out and fill my unit ... A: Chad, I don't have a clue what the guy did I was not there. It is not filled inside the house. ...
Trane Air conditioner unit	7/13/2009
Q: I broughta Trane 2TTX5030A1000AA heating and airconditioner unit from a local company in arkansas. i ... A: I am sorry to inform you that the tech is lying to you. There is no physical way your equipment ...
Settings for 2 level home?	7/13/2009
Q: I have a general question about cost control in a 2 level house. I live in Arizona and currently we ... A: Alex, The first thing you should consider is a tstat controlled power attic fan, if you have an ...
Freon Loss	7/13/2009
Q: I believe that my unit is a heat pump, as it provides my heating and air conditioning. My question ... A: Rick, You need to crawl under your home and secure the cross over duct work, it is flex duct and ...
Freon Loss	7/13/2009
Q: I believe that my unit is a heat pump, as it provides my heating and air conditioning. My question ... A: Rick, There is no such thing as magic, a phrase from my engineering teacher of old. Why would you ...
rv a/c no leaking water on outside of trailer	7/13/2009
Q: my rv a/c is not leaking water on the out side of the trailer what could be the problem ANSWER: ... A: There are a lot of things that can cause it to not condense water from the air, including a little ...
Maytag fridge cooling fan issue	7/12/2009
Q: I have a fridge (Maytag MTB2456gew) that started not working properly, so I tried to troubleshoot. ... A: Mark, FYI, I am just an expert volunteer on here. Looking to build my portfolio for making this ...
Ruud air conditioner/blower issues	7/12/2009
Q: I have a Ruud model #UGDA-12EA-ER furnace with outside air conditioner unit. I turned the AC on this ... A: Jerry, Pull the front door from the furnace. To the right of the vent pipe there is a brown door ...
refrigerant escaped from a/c.	7/12/2009
Q: We have separate Command a/c for 1300 sq. ft. condo unit in South Florida, built 1991. Responding to ... A: Mel, Did He show you the leak? A coil leak be it indoor or out, can easily be repaired. I have ...
AC fan stays on when AC is off	7/12/2009
Q: Replaced an old t-stat recently with a new programmable t-stat (ritetemp model 6025). Initially had ... A: Kevin, http://www.ritetemp-thermostats.com/6025.html Unless there is a program set up for the fan ...
Filter turning black	7/11/2009
Q: I have an electric heating and cooling system and about a month ago we noticed that our air ... A: Toni, It is not coming from your furnace. It is coming through the duct system. Could be a duct ...
air handler bower motor	7/11/2009
Q: I recently change my fan control board for my inside AC unit. The original circuit board had a place ... A: Robert, If you get me the product code number off that unit I can get you the part number for the ...
two-stage vs. single-stage A/C	7/10/2009
Q: We are looking to replace our A/C and furnace. One guy told me that a two-stage A/C is more ... A: Claire, It really depends on your duct system and that is something that the contractors should be ...
Getting heat in summer	7/9/2009
Q: I have a GE heat pump/ac system at our beach home. When we leave the area I turn off the system at ... A: Rob, It sounds like the outdoor unit is staying on, maybe the contactor is frozen shut. It does ...
Installation of AC/Heat	7/9/2009
Q: Our heat pump went out last year and we are currently getting bids on a replacement (regular AC/Heat ... A: Jeri, The tax credit is very high for 410a high seer rating. I agree with both carrier and ...
American Standard AC frosting at gasline service valve	7/9/2009
Q: Model 7A0018-042A. This is a new behavior on a 6 yo system. When the unit starts, the frost appears ... A: Rod, First lets assume that it was charged correctly and no leaks. Change your air filter or pull ...
two-stage vs. single-stage A/C	7/9/2009
Q: We are looking to replace our A/C and furnace. One guy told me that a two-stage A/C is more ... A: Claire, Go with the Bryant which is a carrier product. The outdoor high seer unit is so quiet you ...
Geothermal HVAC systems and problems	7/9/2009
Q: I am considering replacing my nineteen year old HVAC system with a geothermal system. Would you ... A: Bob, First downside is there will need to be a back up heat source unless you don't mind waiting a ...
air handler bower motor	7/9/2009
Q: I recently change my fan control board for my inside AC unit. The original circuit board had a place ... A: Robert, At the very least you need to change to high speed, right now with a dirty filter you will ...
Squeaking noise from AC	7/9/2009
Q: I have a 5 year old Carrier Central AC. It runs OK, but about 30s after the AC stops, it give out a ... A: That could be done by replacing the external equilizer tube on the metering device, which means a ...
charging system	7/9/2009
Q: I was the one asking about charging a sysyem with refrigerent, and yes I'm in thr field, currently I ... A: Brian, Cool. The most important thing to do first is pressure test with nitrogen after all joints ...
AC evaporator & filter	7/9/2009
Q: 2.5 yr old Summit evaporator leaking needs replacement - rest of system is Carrier - Houston, TX ... A: Joseph, They are wrong. Not only have I done many without a problem but they can put wet rags or ...
hvac fan issue follow up	7/9/2009
Q: the fan starts and stops all of the time. the hvac side the the t-stat is off and the fan is set to ... A: Curt, I missed the comment about the fan switch in the on position....my bad. I might need to ...
FUSE	7/9/2009
Q: I HAVE A RUUD 96% FURNACE, I JUST IN STALLED IT AND WHEN THE SAFTY SWITCH IS PRESSED THE POWER ... A: Cliff, Unhook the low voltage wires from the board , That come from the transformer. If you still ...
hvac fan issue	7/9/2009
Q: the fan starts and stops all of the time. the hvac side the the t-stat is off and the fan is set to ... A: Curt, Is this an old furnace? what kind? If you are willing to go through some trouble shooting ...
FUSE	7/9/2009
Q: I HAVE A RUUD 96% FURNACE, I JUST IN STALLED IT AND WHEN THE SAFTY SWITCH IS PRESSED THE POWER ... A: Cliff, You have a low voltage ground somewhere. Put your meter on ohms scale and with ALL low ...
Fan on AC unit won't start	7/8/2009
Q: The fan on my AC unit won't start up. The condenser appears to be ok, it makes the typical humming ... A: Jason, You probably need a new run capacitor, it is a duel capacitor and it also runs the ...
Condensor fan	7/8/2009
Q: I awoke this morning to a warm house of 76 degrees, when my thermostat is set at 68. As i began my ... A: Trey, Hi, spent some time in ft polk I know hot it can be there. Since you heard nothing run, it ...
Room will not cool down below 96 degrees.	7/8/2009
Q: I live in Texas. My second floor is on a separate A/C unit. I have replaced it twice because it ... A: Lynne, First lets make sure the unit is running correctly or nothing else is even worth looking ...
air handler bower motor	7/8/2009
Q: I recently change my fan control board for my inside AC unit. The original circuit board had a place ... A: Robert, You need high speed for cooling and a lower speed for heating. Give me model and serial. ...
heating up the cold side of a heat pump	7/8/2009
Q: My home uses a heat pump. In the winter the outside temp is about +32 f , here in Vancouver B.C. . ... A: John, I suppose if you built a football stadium and heated the air to 100 degrees that would work. ...
Attic verses crawl space.	7/8/2009
Q: I'm replacing my 15 yr old 4 ton heat pump system. My current system has the air-handler in the ... A: Sorry if I didn't make myself clear Dean, I said to put the one air handler in the space in the ...
Ruud vs Carrier vs Goodman/Amana	7/7/2009
Q: My 20 year old Rheem 3.5 ton and 3 ton central system are about to stop running. I live in Texas and ... A: Charlie, Carrier is also bryant day&night, and payne, all the same equipment with the same parts. ...
hvac/central air	7/7/2009
Q: I had a frigedaire furnace with central air unit and honeywell emm-3 minizone panel. I tried to ... A: Howie, Is this something new that has happened or an existing problem? From the small amount of ...
heatpump l/v wiring	7/7/2009
Q: old t.stat old furnace (electric) set up for heatpump, condensing unit being replaced its a ... A: Norm, I do not get any compensation, I volunteer before and after work. The orange wire should be ...
2 thermostats, 1 heat pump	7/7/2009
Q: I'm currently renting a two story townhouse (1500 sq ft); 2 therostats with 1 heat pump. Unit ... A: John, I would hope you have a 2 zone system for those 2 tstats or it will never work right. The ...
AC going on, off,on,off	7/7/2009
Q: I have an American Standard split system (propane). Condenser outside the rest in the attic. 5 ton ... A: Shawn, If it is contaminated then yes, it must be removed, evacuated properly and recharged. If ( ...
AC going on, off,on,off	7/7/2009
Q: I have an American Standard split system (propane). Condenser outside the rest in the attic. 5 ton ... A: Shawn, Your unit is cycling on high head pressure trying to protect itself. I am sorry for the ...
Fried contactor wire	7/7/2009
Q: Good evening Tim, Thanks for taking the time to help me out. I own a Goodman CE 30 !HB residential ... A: Terry, John Borgman here, got your question out of the question pool. It could be both or just a ...
Trane A/C compressor and coil	7/7/2009
Q: .. My Trane 1.5 ton 11 seer with 2 ton cased coil 14.5 w was put in January of 2005. The coil is ... A: Martha, If they find out it is dog urine, gonna be hard to hide it will not be under warranty , as ...
Air conditioner contracts	7/7/2009
Q: Trying to help out my elderly father down in Fla. He is asking me about getting a service contract ... A: Matt, A service contract is a preventative maintenance agreement that usually gives a discount for ...
Tech question on pressures	7/7/2009
Q: I have a quick question. question is: I have a 4 ton Comfort maker air conditioner that I changed ... A: Arric, You need to check for a txv and if you have pressure on the high side and none goes through ...
Central AC Unit Blower will not cycle on and off	7/6/2009
Q: I have a central AC unit, a Trane 5 ton. I set my thermostat to a specific temperature. The unit ... A: Sean, It is not uncommon for a fan switch to hang up. What I recommend is to pull off the door at ...
FUSE	7/6/2009
Q: I HAVE A RUUD 96% FURNACE, I JUST IN STALLED IT AND WHEN THE SAFTY SWITCH IS PRESSED THE POWER ... A: Cliff, You have a low voltage ground somewhere. First thing to do if your not real good with a ...
Tech question on pressures	7/6/2009
Q: I have a quick question. question is: I have a 4 ton Comfort maker air conditioner that I changed ... A: Arric, I doubt it is the compressor, more likely the txv at the indoor coil. To check the txv, ...
new units?	7/6/2009
Q: John -we live in Phoenix & have 2 Trane heat pump units that are 13 yrs. old w/seer rating of 11/12. ... A: Marcia, You can easily get another decade from your equipment if you have some preventative maint. ...
AC evaporator & filter	7/6/2009
Q: 2.5 yr old Summit evaporator leaking needs replacement - rest of system is Carrier - Houston, TX ... A: Joseph, Hi, this is John Borgman, got this question out of our question pool. The coil is not ...
Furnace Hums	7/6/2009
Q: 1984 ICG Gas Furnace. Occasionaly thermostat calls for heat, burner comes on but when motor should ... A: Ray, No need to check the transformer, it supplies 24 volts for the entire system and is always ...
T-stat temp is not met	7/6/2009
Q: Im a 5 yr. tech with my class 1&2 card, residential and comercial experience. Im helping with a unit ... A: Rene' Sure I would be happy to help a tech any time you have a problem. First when asking me a ...
Humidistat	7/6/2009
Q: I recently moved into a house that has a carrier humidistat next to the AC control, it looks fairly ... A: Cheril, There will be a unit attached to the side of the furnace like the ones in the picture with ...
Ac Thermostat-Inside House Blowing semi -cool	7/6/2009
Q: We had a power outage the other day, and we had to reset the S3000 Thermostat for our A/C Unit. Now ... A: Cindy, Actually the A/C unit is on the roof. You probably have an air handler in your ceiling. ...
AC not cooling enough - keeps running	7/6/2009
Q: I have 11 year old 5 Ton Carrier split-unit, just got 5-lbs Freon added, at least that's what the ... A: Paul, Drive around the back of any Ma and Pa store and see equipment that is 40 to 50 years old ...
heat pump	7/6/2009
Q: My YORK heat pump cooling system is not working efficiantly. I have it set at 73 degrees inside and ... A: Shawn, First turn the system off and run the fan in the ON position. This will thaw the indoor ...
AC not cooling enough - keeps running	7/5/2009
Q: I have 11 year old 5 Ton Carrier split-unit, just got 5-lbs Freon added, at least that's what the ... A: Paul, First Paul, if it was that low and had been added to last year they did you a disservice by ...
Ac Thermostat-Inside House Blowing semi -cool	7/5/2009
Q: We had a power outage the other day, and we had to reset the S3000 Thermostat for our A/C Unit. Now ... A: Cindy, It sounds like your outdoor unit has stopped running, have you looked at it and checked? ...
Daughter's Heat Pump	7/5/2009
Q: I just wanted to update you on my daughter's heat pump. We stayed with the same company since the ... A: Dorthy, I would like to thank your appreciation, I have just written a letter to the admin. of ...
trouble codes	7/5/2009
Q: York Diamond 80 model G/UA036A single flashing light= Lockout-check furnace...any help with what ... A: Vince, John Borgman here, got your question from our question pool. That means your equipment has ...
condenser shuts off but can restart	7/4/2009
Q: Our condenser unit will shut off after a few days. The house fan, [squirrel cage] keeps running. I ... A: Jerry, If it is the high pressure switch then your problem would have gotten worse after adding ...
Armstrong BCZ36B12N00A-3 condensate drain pan leaking	7/4/2009
Q: My drain pan slope is towards the back of the unit now, and it overflows and leaks into the ground ... A: Chase, It just needs to be shimmed at the back, it is not usually screwed in to anything, it sits ...
AC	7/4/2009
Q: 2 months ago we had work done to our Goodman AC unit- The first repairman cleaned coils and added ... A: Larry, You should not have had to pay for the first call, as it did not solve anything and how ...
Outside AC Unit stopped running	7/4/2009
Q: We have Train XR 11 outdoor ac unit (almost 6 years old) that has been working fine until this ... A: Derek, Check your breaker and next there is a fused disconnect on the house next to the outdoor ...
Starter kits	7/4/2009
Q: My service tech told me the capacitor for my unit is $259.00, I found it on line for $88.00 bucks. ... A: Warren, First you must understand that a business must make money on labor and parts mark up that ...
Furnace Hums	7/3/2009
Q: 1984 ICG Gas Furnace. Occasionaly thermostat calls for heat, burner comes on but when motor should ... A: Ray, First thing would be to check the amp draw of the motor, it should be about 70 to 80 % of the ...
rheem heat pump, outdoor fan and compressor not start	7/3/2009
Q: I have a Rheem heat pump. model no is RMPC-024JAZ. when call for heat or cooling, the compressor ... A: Yves, It sounds like you either have a bad run capacitor or you have a power problem. Next to the ...
Heat Pump Air Handler	7/3/2009
Q: I live in the Phoenix Az area where most homes have a Heat Pump. Original Owner of my home for over ... A: Sorry...furnace means you have either a gas back up or electric, both are called a furnace, the term ...
Heat Pump Air Handler	7/3/2009
Q: I live in the Phoenix Az area where most homes have a Heat Pump. Original Owner of my home for over ... A: Marty, That's a good one and I can tell you right now it will take some one there with eyes on and ...
Temperature of air out a supply vent	7/2/2009
Q: What is the temperature at a supply vent for a home a/c? Mine is 58-59 degrees. The temperature at ... A: No, 20 degrees is the rule of thumb, you might have a dirty filter or a few ounces low on charge, I ...
Carrier A/C issues	7/2/2009
Q: I have a 3.5 ton carrier a/c unit that was installed three years ago. My house was built three ... A: No Jeff, the blower wheel is way heavier and has more static pressure than the fan blade. Did you ...
AC Coil replacement	7/1/2009
Q: The AC 1st main drain line goes to the main master bath under the sink. The 2nd drain now ... A: The first drain is the rusted drain pan and the color that the water is tells that they are correct. ...
2nd Opinion	7/1/2009
Q: Greetings from another Expert at allexperts.com (I'm in the Excel and Geocaching categories)! My ... A: Two sizes copper pipe, it gives with the gauge pressure what we call superheat and sub cooling, ...
Choosing a High Seer Central Air Conditioner	7/1/2009
Q: John, I live in LA. Have had a contractor determine that i need a 5 ton unit. I know want to ... A: Marlon, Carrier, bryant, day&night, payne are all the same unit and all of their 410a equipment is ...
2nd Opinion	7/1/2009
Q: Greetings from another Expert at allexperts.com (I'm in the Excel and Geocaching categories)! My ... A: Nathen, Something does not add up. If you have a 5 ton fan and duct system the evaporator coil ...
air conditioner	7/1/2009
Q: my breezair evaporater,the motor heats up after working for two hours only why.the other ... A: Mulowoka, All motors heat up, but should never heat to 30degrees c temperature rise above the ...
Ductless A/C	7/1/2009
Q: John, am in the process of planning our retirement home to be built in the Texas hill country. Am ... A: Ron, How well they work will depend on windows , insulation ect. If you do have a cold spell I ...
Carrier A/C issues	7/1/2009
Q: I have a 3.5 ton carrier a/c unit that was installed three years ago. My house was built three ... A: Jeff, Yes you have some issues, either the unit is not sized correctly and or your duct system is ...
Condenser in furnace froze and now..	7/1/2009
Q: I replaced the filter in my furnace about a week ago. I usually keep the AC in the house around ... A: Gary, that is why it is frozen in your evaporator, the fan isn't running. It will use the black ...
Water Source Heat Pump	6/30/2009
Q: To qualify my position I have a background in A/C & Refrig. but have been out of that business for ... A: John, First thing you do is reverse the flow in heat mode and that will eliminate the metering ...
Sealing return air vent	6/30/2009
Q: A neighbor suggested the following tip passed on from an HVAC technician to improve cooling on the ... A: Raf, Tell your neighbor not to do that, unless somehow( and I would bet not ) they over sized the ...
TXV Valve install	6/29/2009
Q: I have a 3 yr old Trane unit that has been diagnosed with a bad TXV valve. The part cost is covered ... A: Bill, Standard practice is to pump the refrigerant to the other coil , lock it down and re use it. ...
a/c question	6/29/2009
Q: I have no low voltage to my outside unit.tried the volt test at thermostat from common to red wire ... A: Doug, Next to your furnace is there a condsensate pump, it has the pvc from the coil dumping in ...
What kind of info/testing should be done to determine replacement AC?	6/29/2009
Q: I live in Kansas, where it's hot and humid in the summer, dry and cold in the winter. My home is ... A: James, Take advantage of the contractors coming to your home, who can see what you have in the way ...
Drip Pan on furnace	6/29/2009
Q: Where is it located? Can mold be found in it? We have a new Trane AC unit and a Trane 2 stage ... A: Fred, John borgman here, got this question out of the question pool, I think in my hurry I ...
is this system overcharged	6/28/2009
Q: the outdoor ambient temp is 90 the indoor ambient temp is 74 the suction psi is 61 the line temp at ... A: Then everything is as it should be. Your in a high humidity area and the tstat should be set at the ...
Geothermal HVAC systems and problems	6/28/2009
Q: I am considering replacing my nineteen year old HVAC system with a geothermal system. Would you ... A: Bob, John Borgman here, got this out of our question pool. Lets start with if you cannot find ...
is this system overcharged	6/28/2009
Q: the outdoor ambient temp is 90 the indoor ambient temp is 74 the suction psi is 61 the line temp at ... A: Terry, First when asking this question the proper terminology is suction line temp and liquid line ...
AC variations	6/28/2009
Q: My wife has a problem with the bedroom temperature in the summer. She is complaining that our AC ... A: Alex, The thermostat controlled attic fan will do wonders for the small expense it requires, it ...
A/C	6/28/2009
Q: I am installing a Goodman 4 ton 16 seer and we are moving it to the back of the house and it will ... A: Frank, Your first step is to have a licenced tech come and pump the refrigerant into the outdoor ...
Problem with leak checks/coils	6/27/2009
Q: Last summer my air conditioning unit in my house stopped cooling. We have a home warranty, so we ... A: Fred, You should find a company that is not trying to milk insurance money. First of all, neither ...
My HVAC unit sweats	6/27/2009
Q: My ac sweats when its nice and hot outside which I assume is normal but when I checked it today it ... A: Johnny, Is this a heat pump in the heating mode? I am assuming so, because you cannot see the ...
Air Diffusers for exposed ducts	6/27/2009
Q: I live in an authentic open concept loft with 11 foot ceilings and 3 large windows along the main ... A: Mariana, Hi, John Borgman here, got this out of our question pool. The main heat gain/loss in ...
can't feel air coming out of ceiling vents	6/27/2009
Q: we just bought our first home yesterday and realized we can't feel air coming out of the ceiling ... A: Mary, You need to get someone to your home that knows what they are talking about to look at your ...
estimated coet of ac (leak) repair	6/27/2009
Q: my ac unit in attic is leaking water. i noticed when water begin dripping through ceiling in ... A: John borgman here got this question from our question pool. Whatever the cost it will be less than ...
Trane Air conditioner unit	6/27/2009
Q: I broughta Trane 2TTX5030A1000AA heating and airconditioner unit from a local company in arkansas. i ... A: Vernita, There really is no lemons in this industry, just poor installation and service work. ...
Coleman ac unit put newfan on outside unit	6/26/2009
Q: My husband just put a new fan on the outside unit and now the compressor will not kick on. what ... A: Shannon, You are going to need a service call. That does not sound good at all, the compressor ...
a/c fully charged and running but not getting cold	6/26/2009
Q: I am fully hvac certified I have a unit that is running and the right preasure but the suction ... A: Rev, Give me the following info and I can tell you ( if the evaporator was clogged you would have ...
cooling problem/air in line	6/26/2009
Q: I live in NC and have an 11 year old Carrier split system for my upstairs. Recently, the system has ... A: Greg, Sounds fishy, if there were non condensibles ( air ) in the lines it would have been fro the ...
heat pump	6/26/2009
Q: The air conditioner blows hot. During the winter it would work ok but the little return line was ... A: Lyle, John Borgman here, got this from our question pool. The large insulated copper line should ...
hvac replacement	6/26/2009
Q: We have a Carrier Weathermaker 9200 gas furnace and a 2 1/2 ton airconditioner that were installed ... A: Fran, It really all depends on how well the furnace was maintained, as far as how much life is ...
drip pan for tempstar furnace	6/26/2009
Q: My Tempstar furnace is leaking around the bottom of the drip pan. What do I need to do? mdl# ... A: Anthony, Usually this is a result of the coil freezing up in the indoor coil and when the ice ...
A/C wont cool	6/26/2009
Q: Let me preface that I'm an auto tech by profession, so forgive me if my terminology is incorrect. ... A: Dusty, Yes a little mix up.Your low side psig reading is a little low and the way to set the ...
A/C wont cool	6/26/2009
Q: Let me preface that I'm an auto tech by profession, so forgive me if my terminology is incorrect. ... A: Dusty, You are way low on refrigerant.Your head pressure at that ambient temperature should be in ...
airconditioning problem	6/26/2009
Q: My thermostat is set at 78 degrees, yet the temperature inside reaches 85 degrees. I change the air ... A: Michael, If your filter is clean and vents are open, go check the large copper insulated pipe that ...
evaporator coil	6/25/2009
Q: Our AC unit was no longer blowing cold air through the vents in the house, so we called a service ... A: Tiffany, You had to have been without cooling or air flow for a long time for it to have made a ...
new coils or new furnace?	6/25/2009
Q: We replaced or home condensor 8 years ago. Last spring or pressure was low and was checked again ... A: Lynette, John Borgman here, got this question from our question pool. Yes to can units be ...
Squeaking noise from AC	6/25/2009
Q: I have a 5 year old Carrier Central AC. It runs OK, but about 30s after the AC stops, it give out a ... A: What??? Tell that tech to go back to school. You are hearing the system equalize its pressures ...
HVAC	6/25/2009
Q: Coleman hvac,blower inside will come on and go off continuously once set temp is reached. Outside ... A: Bill, Hi John Borgman here got this from the question pool. You have an issue in the furnace. ...
Brand new unit (fan runs all the time)	6/25/2009
Q: Brand new 4 ton 15 seer pkg Goodman heat pump fans runs constantly. Ex: temp set 75 degrees, ... A: Yes, The fan should cycle off at the end of a call for cooling., unless the fan is set up by ...
a/c has a leak how to find it.	6/25/2009
Q: i have a 2.5 ton bryant heat pump that loses alot of freon. it holds 8 pounds and i put 6 pounds in ... A: Terry, Since none of the techs that were there adding freon noticed oil dripping everywhere and ...
a/c has a leak how to find it.	6/25/2009
Q: i have a 2.5 ton bryant heat pump that loses alot of freon. it holds 8 pounds and i put 6 pounds in ... A: Terry, That is an incredible size leak. First of all do not use it any more till you get it ...
Fan/motor not running out outside TRANE unit	6/25/2009
Q: This is probably a typical problem, but I thought I would ask. The inside fan is running, so power ... A: Julian, You have an upstairs and downstairs with both air handlers running off the same breaker? ...
Furnace Return Make-up Air Questions	6/25/2009
Q: I am installing a 40K btu 92% nat gas furnace (horizontal mount). I have a concentric vent/supply ... A: Jason, Make up air is fresh air brought in because homes are built so tight now that we breath all ...
Trane AC	6/25/2009
Q: I have a trane 4ton unit that was made in 2000. Sat I started action up and the compressor wasn't ... A: Jim, I am sorry I really cannot understand what you are asking? I know of nothing that is a prv?? ...
Rheem	6/24/2009
Q: I am looking at a 3 ton rheem its about 12 years old.It will not take any freon my suction is at 45 ... A: Joe, At 45 psig it should take refrigerant, because your jug should be about 100 psig. You might ...
AC tripping circuit breaker	6/24/2009
Q: My older AC compressor unit is drawing too much power on start up and tripping the breaker. ... A: Sue, It really shouldn't be able to start a fire, but it can be damaged and need to be replaced, ...
A/C return vents	6/24/2009
Q: I am replacing my old return vent with a larger one. This is the only one in the home that i know ... A: Matthew, Yes to a.) and the return size of the vent is only critical that it is not fewer square ...
Hot second floor. Need an air return?	6/24/2009
Q: I have a 100 year old 2 story home. The main floor is adequately cooled, but the second floor is ... A: Steve, One of the things you should consider, regardless of every thing else is a thermostat ...
Stop Smoke in Dual Zone System	6/24/2009
Q: I have a duplex rental with one HVAC system. Each unit has a thermostat and a return. One tenant ... A: Eric, You can install an activated charcoal filter to control odors. The problem with them is ...
Keeprite central air	6/24/2009
Q: We are new to owning a house and have never had central air before. So I was wondering how to turn ... A: Crystal. No, Crystal it runs off electricity. The thermostat has a system switch that has a cool ...
Residential Air Conditioning/Furnace	6/24/2009
Q: After I put on the AC it only runs for about a minute and then shuts off, without bringing the ... A: Tim, turn the "Fan" switch on the thermostat to the ON position by itself and see if the blower ...
plastic drain pan leak	6/24/2009
Q: we had an A/C company out last week to clear a clogged line. he cleared the line but then told us ... A: Mark, If the tech sealed up the crack there is no reason to replace it. Does the aux. pan have a ...
Air conditioner	6/24/2009
Q: My air conditioner will not cool below 75 degrees during the hottest part of the day. Please advise ... A: Nodea, I already answered this question, why didn't you check the insulated copper pipe where it ...
Residential A/C Dye Test	6/24/2009
Q: John - our A/C Company said we are leaking freon and just did a dye test for almost $100. I ... A: Brian, You are asking the wrong person because.....it will get me on my soap box. As a ...
Air conditioner	6/24/2009
Q: My air conditioner will not cool below 75 degrees during the hottest part of the day. Please advise ... A: Nodea, The way to tell if your A/C is close to being set up correctly is as follows. First make ...
Gibson heat pump not cooling	6/23/2009
Q: I have two Gibson units for my home, one for upstairs and one down. Both installed in 2003. The ... A: Steve, The click you heard was the contactor pulling in, which is good it is supposed to on a call ...
Gibson heat pump not cooling	6/23/2009
Q: I have two Gibson units for my home, one for upstairs and one down. Both installed in 2003. The ... A: Stave, Yes another tech that knows his job. at the outdoor unit, there is a large copper pipe ...
cooling temperature control	6/23/2009
Q: cndMy wife sets the t-stat about 5 degrees higher when we leave in the morning (and we argue about ... A: Bill, I don't like to get in marital disputes....lol An A/C by design is ment to hold temperature ...
Blower always running	6/23/2009
Q: Alright last winter the heat on my unit wuit working, the blower and the inducing fan always are ... A: Christina, John Borgman here, I got this question from our question pool. Could you provide me ...
HVAC system	6/23/2009
Q: We installed a new frigidaire hvac unit in 2004. We have had nothing but trouble w/ the temperature ... A: If the outdoor unit is not running and the indoor is, check the tstat. Is the fan switch set to the ...
TXV valve	6/23/2009
Q: My downstairs air conditioning stopped cooling a week ago. It is a Bryant 5 ton system that is only ... A: Steve, I don't have a cross reference guide to tell if the replacement was correct, but it ...
AC Unit	6/23/2009
Q: I went outside to check Ac the fan wasn't runining and it was real hot on back of fan motor. The ... A: Charles, Hi John Borgman here got this from our question pool. With the power off to the outdoor ...
HVAC system	6/23/2009
Q: We installed a new frigidaire hvac unit in 2004. We have had nothing but trouble w/ the temperature ... A: Jennifer, Wow, what a horror story......You have a freon leak, but it is not at the indoor coil ...
Outdoor A/C no longer functioning with new furnace.	6/23/2009
Q: We recently had our old (Olson Duomatic) mid-efficiency furnace replaced with a Trane Xv95 (model ... A: Renay, Just curious where in Europe are you? Anyway the thermostat will send a signal through the ...
home ac unit	6/23/2009
Q: i have a heating and cooling guy out here now.had ac installed two years ago and the system looses ... A: Mike, If he took it to 400 psi and it held there is no leak, at least not one that could happen ...
poor airflow in finished attic	6/23/2009
Q: I have a small home built in the 1940s that has been expanded twice. The original house is about ... A: Dave, The inline blower would create as much resistance as it produces. My biggest question is why ...
Air handler and compressor not turning on	6/23/2009
Q: I have a spacepack a/c system and a hot water boiler as my HVAC system in my house. I replaced the ... A: Benjamin, When a thermostat has an Rc it also has an Rh. Those two need to be jumped for heat and ...
York Diamond 80 - 9 Flashes	6/23/2009
Q: I have a York Diamond 80 heating and central air conditioning unit. When I turn it on, it flashes 9 ... A: Donald, John Borgman here got this from our question pool. It means that something has gone to ...
Bryant vs Payne 3 ton 13 SEER heat pump/ac unit	6/22/2009
Q: Our Bryant 3 ton 13 SEER heat pump/ac unit went out and we had to fight with FirstAM Home Warranty ... A: Linda, Payne, Bryant and Day and Night are all Carrier, they give different names and different ...
price of central air	6/22/2009
Q: i have a 1976 model 14x70 trailer house. it has cental heat but not air. a family member of mine ... A: Joseph, No, only one per breaker, those are run load amps. When the window unit starts it pulls ...
Which air units to buy	6/22/2009
Q: John, Help, our air conditioning went out this weekend and we have had 3 people trying to sell 3 ... A: Kim, The Trane would be the $5,700 it is always the most of those three, Payne is the middle of ...
Hard Start Kit for small A/C system	6/22/2009
Q: I have a small ductless mini split system (Heat Controller, Inc.) that conditions a room over a ... A: Ron, Cost of call was reasonable, as far as the rest, no way to tell without, being there and ...
ac window unit cycles compressor on off	6/22/2009
Q: we have a small ac window unit that has begun to cycle the compressor on and off every 5 minutes or ... A: Keith, The problem with window units is that since you can get a brand new one at home depot for ...
Intertherm A/C Leaking	6/22/2009
Q: We have an Intertherm A/C and heat pump in a double wide mobile home. The inside unit is leaking ... A: Claudette, A couple of questions for.....All vents open and not covered? Is your filter clean? ...
residential a/c	6/22/2009
Q: what should the proper pressures be (high and low side) on a 410A system thanks ANSWER: Woody, ... A: Woody, In looking over your numbers briefly, I need to know if in fact the supplies and the ...
Air Conditioning: Keep basement door shut?	6/22/2009
Q: We have a carrier system that is about 7 years old installed to cool main floor and walkout ... A: Connie, No, shutting down vents is never a good idea as far as efficiency and longevity of your ...
added misters to AC	6/21/2009
Q: I ran a 3/8" water line up to my roof mounted AC/Heat pump and installed misters above the intake ... A: Allan, I wouldn't recommend the mister due to the affect it has on the head pressure of your ...
expansion valves	6/21/2009
Q: what are the steps to change them out A: Robert, All refrigerant must be recovered or pumped to the other side of the service valve from ...
air conditioning	6/21/2009
Q: How to reduce the static pressure like form 0.35wc to 0.25wc,and is that mean I have problem with my ... A: Sam, The static pressure would increase with fan speed, the filter could be dirty, the duct system ...
Attic heat re-circulation...	6/21/2009
Q: ..my attic is obscenly hot while my house is too cool. I'd like a solar-powered (12v) duct inline ... A: David, Answer is the same and I have had a couple of people that I spent good amount of time re ...
Adding R-410A	6/21/2009
Q: I used to charge my home AC system when R-22 was common. I've added R-22 in both liquid and gas ... A: Don, That is a HUGE leak and your service company are very incompetent . I could find that leak ...
ruud central a.c.	6/21/2009
Q: I have a ruud central a.c. older model maybe 30 years old. About a week ago it started noticing that ... A: Ed, you will take a huge chance on damage if you continue to use the A/C. Could possibly take out ...
ruud central a.c.	6/21/2009
Q: I have a ruud central a.c. older model maybe 30 years old. About a week ago it started noticing that ... A: Ed, It is physically impossible for the refrigerant to flow into the condenser when the compressor ...
Adding R-410A	6/21/2009
Q: I used to charge my home AC system when R-22 was common. I've added R-22 in both liquid and gas ... A: Don, The reason for not trying to add 410a on the high side is that, the standing pressure in your ...
residential a/c	6/20/2009
Q: what should the proper pressures be (high and low side) on a 410A system thanks ANSWER: Woody, ... A: Woody, Are you sure that you are on a 410a system? Something is terribly wrong if you are. The ...
Time to Replace All	6/20/2009
Q: House is 25 years old and I suspect unit in attic is that old. Coleman blend air system upstairs and ... A: Francis, John Borgman here, got this out of our question pool. If you replaced the duct system ...
white-rodgers digital thermostat	6/20/2009
Q: the thermostat often shows the temperature as getting warmer as the air conditioner is running. It ... A: Karen, Yes the pipe will drip there more than other area's due to the high humidity. If it is ...
Solder or braze AC outdoor unit repair	6/20/2009
Q: York central air outdoor unit approx. 2 years old. AC stopped cooling. Repair tech found no R-22 in ... A: Ken, Actually I appreciate the long response, gives me a lot more to go on. oxy/acetylene is the ...
Corroded Coils?	6/20/2009
Q: I have a Day and Night residential 3 ton unit and the unit is ground-mounted on a cement slab next ... A: Jim, Yes urine can do that....bad dog. But just because the techs electronic detector sounded, ...
Attic heat re-circulation...	6/20/2009
Q: ..my attic is obscenly hot while my house is too cool. I'd like a solar-powered (12v) duct inline ... A: David, It doesn't work that way, David. Even if you have no insulation under your home, that ...
ac unit won't cool	6/20/2009
Q: I have turned on my unit, which is 8 years old, and it runs but doesn't cool at all. I assume it ... A: Ken, I will assume you mean that just the A/C is outside and that you have and indoor furnace/air ...
Insulation on Return Air Ductwork	6/20/2009
Q: Mr. Borgman, I live in northwest Florida. The humidity and heat here are often very high. My home ... A: Shawn, Call your local utility company and ask that question. The reason for this, is, they might ...
white-rodgers digital thermostat	6/20/2009
Q: the thermostat often shows the temperature as getting warmer as the air conditioner is running. It ... A: Karen, First you shouldn't have any type of devise pulling hot air from the attic. Are you saying ...
Frigedaire central air conditioner	6/20/2009
Q: what causes the inside panel to fry, and how hard is it to replace? my air conditioner didn't work, ... A: Karen, Got this question from our question pool. A lot of things can cause the " board " to burn ...
central AC noise inside unit	6/20/2009
Q: While running it sounds like a fan is rubbing under the inside coil. Unit is 2 years old A: Jim, The set screw that holds the blower wheel onto the shaft of the blower motor sometimes is not ...
Solder or braze AC outdoor unit repair	6/20/2009
Q: York central air outdoor unit approx. 2 years old. AC stopped cooling. Repair tech found no R-22 in ... A: No, you are not nuts and unfortunately you have not had a pro out anyway. Jeez , 2 years ...
residential a/c	6/20/2009
Q: what should the proper pressures be (high and low side) on a 410A system thanks ANSWER: Woody, ... A: Woody, The 240/60 measurement would only work under the exact condition of outdoor ambient ...
New Unit Not Cooling	6/20/2009
Q: We had a Goodman 2.5 ton split heat pump system put in this morning. The temperature has not ... A: Karen, that is the biggest line of bull I have ever heard. I assume you are trying to cool? At the ...
air handler - coil leak	6/20/2009
Q: I live in rural Maryland outside of Washington D.C. I have owned my home since it was built in 1997. ... A: Raye, If it worked when they left a week ago, would be kinda hard for them to have left something ...
Wiring AC to furnace circuit board	6/19/2009
Q: My father-in-law replaced my furnace this winter with a new ArcoAire 80+ single stage furnace. All ... A: Curtis, One wire goes to the "C" terminal, it is the low voltage common. The other Goes to the ...
residential a/c	6/19/2009
Q: what should the proper pressures be (high and low side) on a 410A system thanks A: Woody, I would be happy to help you understand what and why the pressures and the temperatures ...
Water dripping from Air conditioner	6/19/2009
Q: Recently turn on Air conditioner in basement. Water are dropping from A/C. Can you advise how I can ... A: Howard, You have one of two problems. A physical leak from the part of the system that catches ...
a/c is blowing air but not cooling	6/19/2009
Q: My central a/c in my house stopped cooling last night. The unit outside is running and the lines did ... A: Hannah, The noise in the attic could be a condensate pump that removes the water made from the ...
fuses blowing on ac unit	6/19/2009
Q: I bought a 4 ton 13 Seer SPP G/E in Nov/2007. have had no problems until this past Sunday. It just ... A: Mary, No do not change it to a breaker. A breaker does not give enough protection for the ...
AC/Heat Pump compressor runs sporadically	6/19/2009
Q: Our central AC/Heat Pump occasionally won't run. I checked pressure (85 low, 185 high) when it does ... A: Rick, Not beginners mistake, but , learning experience. There are 2 types of start relays when ...
American Standard Freedom 80 making a high whine noise.	6/19/2009
Q: First thank-you very much for your time. I have an American Freedom 80 model number AUD80C936J1, It ... A: Karen, Hi, John Borgman here got this question from the question pool. IFC is integrated fan ...
Armstrong Heat Pump Problem	6/19/2009
Q: I have an Armstrong heat pump (Concept 10)that decided that it doesn't want to turn on this summer. ... A: Paul, First you should measure across the contactor load end just as a matter of good ...
Compressor info	6/18/2009
Q: This is the info I got from one company yesterday. My compressor started for only couple sec before ... A: Teri, time to get on the phone and get another company to come out. I really cannot help you ...
fuses blowing on ac unit	6/18/2009
Q: I bought a 4 ton 13 Seer SPP G/E in Nov/2007. have had no problems until this past Sunday. It just ... A: Mary, first call someone else, it is a very simple matter for a tech to find out why the fuse blew ...
AC/Heat Pump compressor runs sporadically	6/18/2009
Q: Our central AC/Heat Pump occasionally won't run. I checked pressure (85 low, 185 high) when it does ... A: RICK, Could be a lot of causes that all point to abnormal running conditions and would need to be ...
air handler - coil leak	6/18/2009
Q: I live in rural Maryland outside of Washington D.C. I have owned my home since it was built in 1997. ... A: Raye, No there are wrong and to go so far with the explanation and quoting laws that do not exist, ...
air conditioning	6/18/2009
Q: My outside unit is running all the time- whether inside is blowing cold air or not. I had to ... A: Heidi, Lets make sure we are not talking "apple and oranges" The furnace is the indoor section ...
Follow up to Ruud Heat Pump	6/18/2009
Q: Our inside unit is located in the basement behind shutter doors. Last night I noticed the floor in ... A: I donate hours of my own time daily/weekly to help those that appriciate it and go out of there way ...
Compressor info	6/18/2009
Q: This is the info I got from one company yesterday. My compressor started for only couple sec before ... A: Terri, I agree about the 3 weeks thing, if you were my customer I am sure I could get my supplier ...
AC/Heat Pump compressor runs sporadically	6/18/2009
Q: Our central AC/Heat Pump occasionally won't run. I checked pressure (85 low, 185 high) when it does ... A: Rick, what made you hit the compressor housing to fix it? I would need a lot more info to give you ...
ac not turning off	6/18/2009
Q: we have an older central air unit/furnace and we turned it on a few days ago and it won't stay ... A: Krissa, Sounds like one of two things. One the thermostat is not working correctly and if so must ...
Heat Pump	6/17/2009
Q: My daughter has a Lennox heat pump. We live in Central Florida and the unit is three years old. ... A: Dottie, If the tech installed the motor, why must he wait till tomorrow to see if it fixed the ...
Vibrating Vents	6/17/2009
Q: We bought a new house last November, we ran the central heat through the winter with no problems. ... A: Bill, It sounds like you are getting a harmonic transfer from the compressor in the outdoor unit, ...
Ruud Heat Pump	6/17/2009
Q: We have a 1998 Ruud AC/HP UPNJ-025JAZ. We had a service person out because air was blowing through ... A: Janice, the national average is 17 years. To just repair a freon leak in the indoor coil that seems ...
Magic Chef HVAC water problem	6/17/2009
Q: I have a Magic Chef HVAC unit in a hall "closet" that is dripping water by the gallons. It has not ... A: James, where does the drain go? can you run water through it out of the home without it backing up ...
Residental air conditioning and heat pump	6/17/2009
Q: I have two questions please: 1- in heat pump what will happen to the system if I reversed the ... A: Sam, First question, The accumulator will not be able to do its job correctly. And the HP will not ...
AC not cooling	6/17/2009
Q: My AC was on for 4yrs and never got cool in my house. Had a man come look at it and was told the ... A: Terri, Here is a list of questions you need answered at the service call tonight. I would ask these ...
AC Coil leak in attic	6/17/2009
Q: I had an AC tech out to look at the air handler? portion of my AC unit located in our attic. It has ... A: Holly, The main drain pan is not the coil, it is what the coil sits on to catch the water that runs ...
air condensor leak	6/17/2009
Q: There has been a leak in my bathroom for a week now. I contacted the property manager/maintenance ... A: Tara, First of all the condenser is the outdoor unit, not the one inside. You are correct that the ...
A/C is leaking	6/17/2009
Q: I have a central A/C unit. The blower+coils are in the attic. For about a week now I have been ... A: Joe, For that fix you are going to need a service tech to figure it out on site or run a new one if ...
A/C - house doesn't get cool	6/17/2009
Q: I just had the motor for the blower replaced on my ac system. The ac blows cool air (65 degrees) ... A: Craig, Before we look at the numbers, the thing about the blower being installed upside down is ...
AC not cooling	6/16/2009
Q: My AC was on for 4yrs and never got cool in my house. Had a man come look at it and was told the ... A: Terri, yes that is a completely different set of circumstance as far as the wiring. The box on the ...
manifold pressure	6/16/2009
Q: i forgot to yell you that is r22 for my questin. thanks john for your help A: Yes I knew you were talking R22. Keep this is mind The purpose of the outdoor coil ( condenser ) ...
MANIFOLD PRESSURE	6/16/2009
Q: WHAT PRESSURE SHOULD THE HIGH AND LOW BE ON THE MANIFOLD GAUGES? IF THE LOW IS HIGH I KNOW YOU ADD ... A: Paul, you do not add R22 to bring the low side pressure down, that will increase it. You add R22 to ...
Icing up	6/16/2009
Q: We have an Intertherm split unit I guess you would call it for a mobile home. It's a heating and ... A: Paul, remove the filter and see if it runs normal, that is the quick answer. Mobile homes have poor ...
Coil replacement	6/16/2009
Q: We had our evaporator coil replaced about 1.5 years ago. Our air conditioner was not cooling ... A: Lisa, Why in the world would you have the secondary drain pan replaced. It is just a metal pan ...
York Central Air Unit	6/16/2009
Q: I have a York Central Air Unit, 3 zones and 2 programmable thermostats. When you first turn the ... A: Lisa, As I said, you will need a tech on site that understands zone systems. If you in fact had the ...
AC not cooling	6/16/2009
Q: My AC was on for 4yrs and never got cool in my house. Had a man come look at it and was told the ... A: Terri, I recommend you call another company, one that has N.A.T.E. certified techs. If everything ...
air conditioning/ heatpump	6/16/2009
Q: Air conditioning on heat pump runs all day during the day. I can turn the temp up and 10 minutes ... A: Debbie, I understand what you are describing. And I am sorry to ask another question of you, but if ...
Trane Air Handler Dripping/Freezing up	6/15/2009
Q: Help. I have been told valve (mercury) has gone bad and that is why the unit is developing ice. Ice ... A: Derek, If your filters are clean and all the vents are open and it is doing this, you have a freon ...
AC temp variances	6/15/2009
Q: What should the difference from outside to inside actually be? EX: 95 outside, will the ac take a ... A: Donna, if the duct system and the equipment are sized correctly and set up and running correctly, ...
Power spikes when air condition comes on	6/15/2009
Q: I just recently had a Lennox 5 ton XC14-060 air condition installed. Each time the unit starts, ... A: Jennifer, Did an electrician do the high voltage part and run a branch circuit? Your right about ...
house not cooling	6/15/2009
Q: i recently replaced a old York unit with a new Goodman unit. i have power working at the unit, when ... A: Carlos, The large line with the black insulation should be cold and dripping wet where it connects ...
replacing filter	6/15/2009
Q: cant find where to put the new filter (cant find the old one). i really need help tempster dc90 ... A: Penny, I get the impression that this has not been done in a long time. A year? two? If so, make ...
York Central Air Unit	6/15/2009
Q: I have a York Central Air Unit, 3 zones and 2 programmable thermostats. When you first turn the ... A: Lisa, With zone control systems you need a good tech on site, too many things to do on line to find ...
A/C	6/15/2009
Q: We have an new central A/c that was installed on our existing furnace. But we don't believe it is ... A: Bon, Now that the fan is on high, which is where it should be, you should have your freon checked. ...
please help	6/14/2009
Q: Good Day, One Day Air was working fine (could cool to whatever we put the temp on. We kept it ... A: The amp draw on your motor is normal. As far as pressures and " sweat back and good condensation" I ...
Air Handling Pannel	6/14/2009
Q: My York unit #G/HCO36AA has a rusted out condensate pan. The unit is in three section stacked on top ... A: There are screws on some coils on the back side opposite of the pvc connection. They all have some ...
Unit will not run	6/14/2009
Q: I have a Goodman 070-3. My A/C unit will run for about 5 minutes before turning off which is about ... A: Your outside unit is your A/C, the indoor unit is called the Air Handler, which is where the blower ...
Heat Pump	6/14/2009
Q: My daughter has a Lennox heat pump. We live in Central Florida and the unit is three years old. ... A: Wow..........I would hope they are not charging you for all this. For the high pressure switch to ...
a/c drain	6/14/2009
Q: My air handler is in the attic,during the summer it drains 4 a lil while like it should then the ... A: Good choice of what to look at. The only way to have water in that pan is for the dain to be ...
trouble shooting	6/14/2009
Q: John: I have recently obtained my hvac certificate from Cape Fear com. col. in Wilmington NC. I was ... A: David, you answered your own question. You CANNOT ommit the evacuation process. The reason your ...
new HP compressor not pumping	6/14/2009
Q: I installed a Ducane 2 ton HP two years ago and had to replace compressor last year due to bad ... A: Mark, When you are at this unit and calling for heat or cool from the tstat and your gauge's are ...
Zoned A/C retrofit	6/13/2009
Q: John, Would you please let me know what is involved with changing from two separate AC systems to a ... A: Will be way cheaper to fix them. All the duct work will have to be redone. Mechanical zone dampers ...
AC freezing cooling downstairs not upstairs	6/13/2009
Q: We have a Lenox AC/Heating Unit. I has been working fine, but recently it is freezing up. The AC ... A: A.Yon, If you have icing then your system is not working correctly. It will not freeze if it is set ...
trouble shooting	6/13/2009
Q: John: I have recently obtained my hvac certificate from Cape Fear com. col. in Wilmington NC. I was ... A: David, give me high and low pressure, suction line temp and liquid line temp at outdoor unit. ...
A/C - house doesn't get cool	6/13/2009
Q: I just had the motor for the blower replaced on my ac system. The ac blows cool air (65 degrees) ... A: The blower is the indoor unit. which motor was replaced? The outdoor unit, "pulls" air across the ...
Lennox Model CB28UH-030-01	6/13/2009
Q: 1. Should I be able to get the Model and Serial Number off the front of the unit? 2. Is this really ... A: Model and serial are on the outdoor unit , yes. If you want to know if it is a heat pump, you need ...
Follow up	6/13/2009
Q: John: sorry for another question. I am still stumped by my blower motor. This morning I went out ... A: Rick, if the unit cools fine in the cooling mode with the fan switch in the on position? Is that ...
AC compressor noise	6/12/2009
Q: I have a 5 ton central air AC unit (just AC, no heat). It seems to operate normally (it cools the ... A: I am sorry, that is one of the few units I am not familiar with coded serial numbers to find date of ...
HVAC Thermostat	6/12/2009
Q: We installed a new Carrier Performance Series 15.5 seer. Contractor installed a "Non-programmable" ... A: Debora, No there are no requirements like that and if there were it wouldn't make a difference. ...
Fan Relay Switch Replacement	6/12/2009
Q: I have a Bard split unit heat pump. Have been quoted a price of $220, part only, to replace this ... A: Dan, not many Bards around here. Is this an electric furnace/ air handler? If they use a simple ...
Refrigerant lines	6/12/2009
Q: We're replacing our 20+ year old Janitrol system. One contractor has said that we have to replace ... A: Replace the lines. If you would like the physical reasoning read on....410a has a completely ...
Blower Transformer/Continuation/More Details	6/12/2009
Q: If a newly installed blower transformer is incorrectly wired, will it blow out the newly installed ... A: You need to contact the owner of that company. Do NOT have him back out, he doesn't have a clue as ...
AC compressor noise	6/12/2009
Q: I have a 5 ton central air AC unit (just AC, no heat). It seems to operate normally (it cools the ... A: Emmanuel, It sounds to me like the refrigerant equalizing, ie, when running there is a difference ...
A/C - house doesn't get cool	6/12/2009
Q: I just had the motor for the blower replaced on my ac system. The ac blows cool air (65 degrees) ... A: Craig, Did it work fine before the blower? Could be on the wrong speed. When it has been running ...
Blower Transformer	6/12/2009
Q: If a newly installed blower transformer is incorrectly wired, will it blow out the newly installed ... A: No, but a newly installed blower wired wrong will burn itself up. The wire on the other hand is ...
A/C	6/12/2009
Q: This particular system is a split--heat pump R-22.This unit has a sight glass on the liquid ... A: My name is John, I found your question in our pool of unanswered questions. The actual temperature ...
Blower motor -- intermittent problem	6/12/2009
Q: I have a Heil package heat pump. The blower motor is failing to start about half the time when I ... A: Rick. Kinda cool , you are learning a lot about your equipment. With this new info it is sounding ...
Breaker Size	6/12/2009
Q: Borgman, Thanks for accepting my question. I have an Old 240V GE Electric Furnace (1973 year)with a ... A: Although some of the current is stepped down for low voltage control, it amounts to very little ...
window unit	6/12/2009
Q: I then heard it come on but diddnt stay on but for few seconds.unit is only 3 years old and is on ... A: The only way to know about the unit and the breaker is by the amp draw total of the window unit. If ...
Blank Thermostat	6/11/2009
Q: I have an intermittent problem that began 6 months ago. Was happening once a month. Now once a ... A: Ok, if it a package unit on the roof and it also happens in heating, then it is not that. If he ...
RTH221B Honeywell thermost wiring?	6/11/2009
Q: Well,here is my question.I had a old round thermoststat and replaced it with the honeywell rth22b in ... A: You are welcome. It sounds like it might be more than you are ready to handle and you might need a ...
Rheem vs Lennox A/C unit?	6/11/2009
Q: I have single story approx. 1340 sq ft home that I am putting A/C on. I have 2 quotes one is for a ... A: Bobby, all companies offer cased or uncased coils, just depends on the bidder. If there is ever a ...
Compressor comparison, cont. from 6-10	6/11/2009
Q: I thought I would go ahead and just turn the system on and describe the conditions. Outside ambient ... A: It should be the large insulated line that is wet. And you should have about a 20 degree difference ...
Split AC Not Cooling	6/11/2009
Q: I have a 1 ton videocon split air conditioner at my home. Most of the time it does not cool i.e. the ... A: You can get a ball park idea, if, your equipment is set up correctly, by, when it has been running a ...
Compressor comparison	6/11/2009
Q: I need to replace my compressor on a Trane unit. Due to finances, I need to spend minimal dollars. I ... A: You are describing the service valve, which if leaking can be repaired or replaced. Again it is ...
Compressor comparison	6/11/2009
Q: I need to replace my compressor on a Trane unit. Due to finances, I need to spend minimal dollars. I ... A: Slow down.....If the large line was freezing then the compressor is working. Do you remember the ...
Compressor comparison	6/11/2009
Q: I need to replace my compressor on a Trane unit. Due to finances, I need to spend minimal dollars. I ... A: One is a 48,000 btu capacity and the other 51,000. You really need to match it with the correct ...
Heat Pump	6/11/2009
Q: I have a Miller heat pump. I turned on my air and although it is blowing it is not very cold. The ... A: It would be in that box. I don't know the codes there but I am surprised it is not code. If there ...
Secondary drain pan	6/11/2009
Q: Greetings, I just had my evaporator coil replaced by a local company sent by the home warranty ... A: Wow all kind of red flags. First since the auxiliary drain pan is under the evaporator, why did ...
Heat Pump	6/11/2009
Q: I have a Miller heat pump. I turned on my air and although it is blowing it is not very cold. The ... A: I don't believe " Miller" brand has a manual reset for high pressure. The disconnect box on the ...
Mobile Home A/C Air Flow	6/10/2009
Q: I have a modular home (essentially a double wide)about 2,000 sq. ft. with a heat pump. The rear half ... A: "bow" was a typo....sorry. If you pull a register and look under it you will see the size of the ...
HVAC cycling on/off	6/10/2009
Q: Just moved into a new home. Unit is a Lenox 5 ton. Problem is that the unit cycles on until unit ... A: The t-stat should be as close to the return air as possible. Most t-stats have an adjustment that ...
Blank Thermostat	6/10/2009
Q: I have an intermittent problem that began 6 months ago. Was happening once a month. Now once a ... A: I need a little more info on what kind of a t-stat, but generally it could be a faulty t-stat or if ...
Leaking Air Conditioner	6/10/2009
Q: I have a brand new 09 5 ton, 14 seer RUUD unit just installed 2 months ago. When the unit shuts ... A: That is what I was trying to explain in my prior.....The coil drain pan has a pvc connection coming ...
Air Handle / Duct work	6/10/2009
Q: My condensing unit is toasted and we are replacing it. It is a 3 ton. Furnace is in good shape. The ... A: A 7' duct can handle 150 to 175 cfm and an 8" can handle 200 cfm at .1 static. I suppose if those ...
Blower motor -- intermittent problem	6/10/2009
Q: I have a Heil package heat pump. The blower motor is failing to start about half the time when I ... A: Generally there is a control module, ( board ) that controls that, but it could be one or the ...
poor air flow to second floor	6/10/2009
Q: ..my family and I moved into a 2-story contemporary home last August. The main floor is open to ... A: Unfortunately, this is a typical problem with 2 story homes. When built , they really don't put ...
RTH221B Honeywell thermost wiring?	6/9/2009
Q: Well,here is my question.I had a old round thermoststat and replaced it with the honeywell rth22b in ... A: You need a jumper from Rh to Rc ( rh=heat rc=cooling) green is correct. You should have a y and w ...
Mobile Home A/C Air Flow	6/9/2009
Q: I have a modular home (essentially a double wide)about 2,000 sq. ft. with a heat pump. The rear half ... A: No, unfortunately , each side has a single bow duct the same size that runs the full length and the ...
Blower motor -- intermittent problem	6/9/2009
Q: I have a Heil package heat pump. The blower motor is failing to start about half the time when I ... A: The contactor has a rating tag on it that gives you coil voltage. It should be 24 volts unless you ...
Condensor fan replacement	6/9/2009
Q: The fan on my daughters outside condensing unit is making a lot of noise and needs replacing. I am ... A: Paul, the condenser fan motor is a 1075 rpm single speed PSC. That means permanent split capacitor ...
upgrading to programmable t-stat	6/9/2009
Q: My heat pump (no ac) is model U80-2. I got a Lux TX1500 digital t-stat to upgrade my old ... A: If you had just gas & A/C I wouldn't object, but since you have a heat pump, I would not put that ...
Leaking Air Conditioner	6/9/2009
Q: I have a brand new 09 5 ton, 14 seer RUUD unit just installed 2 months ago. When the unit shuts ... A: With the door off you change every thing, so you cannot go by that. If it is leaking at the furnace ...
Air Handle / Duct work	6/9/2009
Q: My condensing unit is toasted and we are replacing it. It is a 3 ton. Furnace is in good shape. The ... A: Eric, If you haven't cut holes yet, you might consider making what you have better, by not having an ...
baseboard heat aluminum fin alignment	6/9/2009
Q: Does it matter which way the fins are turned on the baseboard unit? I believe the aluminum "fins" ... A: Ron, The baseboard heater transfers heat to the room by convection. That is, it is the molecules of ...
Air conditioner unit	6/8/2009
Q: Bryant 567dj030- First the contactor was stuck closed, but the unit was not operating. Power was ... A: The contactor is supposed to be closed when there is a call for cooling, so if you were trying to ...
Replace Unit Options	6/8/2009
Q: I have a older "gas pac" that needs replacing. Is a "gas pac" still a good option, or is the newer ... A: Because of where you live, you should stay away from the heat pump. It will spend all its time ...
Strange vibrating noises from my attic	6/8/2009
Q: For the last few months I've been occasionally hearing loud vibrating noises coming from the attic ... A: Gina, I really don't know, could be the blower motor coming on or off (bearings getting worn ) ...
New Heat Pump AC run time	6/7/2009
Q: I have a new tempstar heatpump and have had the installing company back 6 times for service. I am ... A: First let me apologize for the installing company. The chance of a new t=stat being bad these days ...
Air conditioning system conked out	6/7/2009
Q: My home air conditioning system started acting funny recently and then finally conked out. There is ... A: I can tell you right now you are going to need a service call. But, you have some interesting ...
no power?	6/6/2009
Q: I recently switched out my breaker box to accomodate my electric water heater and when I got it all ... A: Tested wiring at the unit??? Does this mean you have 110 volts at the unit? A couple of things come ...
goodman heat pump transformerproblem	6/6/2009
Q: transformer keeps blowing low voltage gets very hot checked wiring for shorts seems to happen when ... A: Do you mean that a fuse keeps blowing in the furnace? a 3 or 5 amp plug in fuse? Not knowing how ...
House with 2 HVAC systems	6/6/2009
Q: I recently purchased a home with two HVAC system. The upstairs unit is a heat pump with electric ... A: It would take someone with above average knowledge to set both units up off one controller as the ...
water in my airhandler	6/6/2009
Q: Recently my evaporator coil iced and the metal box below it (which I believe collects the returning ... A: There is part of your problem, the folded air filter. Air takes the least path of resistance, so ...
suction line 130 psi ?	6/6/2009
Q: what might be the reason for such high pressure for low line ? i have lennox split ducting unit , ... A: I assume an r-22 unit? If so and not a heat pump, you have a mechanical failure of the compressor. ...
water in my airhandler	6/6/2009
Q: Recently my evaporator coil iced and the metal box below it (which I believe collects the returning ... A: It is more than likely insulation. Now since you can see it, you are looking under the blower motor ...
air conditioner capacitor	6/5/2009
Q: i am looking to replace the dual capacitor in our central air conditioner at home, it has a ... A: Did you pull the cap from its mount and look? If so, and you cannot read it, you will need to ...
water coming out of indoor HVAC	6/5/2009
Q: We just had a new HVAC-heat pump installed (indoor & outdoor unit) and water seems to be backing up ... A: OK. Then if this is a new install it should be reported to the company you bought it from, so they ...
water coming out of indoor HVAC	6/5/2009
Q: We just had a new HVAC-heat pump installed (indoor & outdoor unit) and water seems to be backing up ... A: I might need a little more info....But in the mean time.... Water does not flow up hill, make sure ...
American Standard Freedom 90 blower problem	6/5/2009
Q: I have an American Standard Freedom 90 furnace with a brand new (yesterday) American Standard ... A: When you pull the door or kill the power by the safety switch, the board re-sets itself, erasing any ...
central air copper size	6/5/2009
Q: I have an old ac unit (I think the original lol) about 30 years old. I had two companies say I need ... A: Doug, Now that is a different story. You MUST replace the line set, no if's or but's. Oils from ...
charging procedure	6/5/2009
Q: I have a central air condensing unit I have to replace is there some other way I should be charging ... A: If you are replacing it, the proper way to charge is by weighing the new charge, adding or ...
central air copper size	6/4/2009
Q: I have an old ac unit (I think the original lol) about 30 years old. I had two companies say I need ... A: Doug, You did not say, but I assume that old unit wore out. If you are staying with r-22 and it ...
Furnace Return Make-up Air Questions	6/2/2009
Q: I am installing a 40K btu 92% nat gas furnace (horizontal mount). I have a concentric vent/supply ... A: Jason, I saw this question in our question pool of unanswered questions. You don't want that vent ...
central a/c maintenance cleaning	5/20/2009
Q: After 10 years use, I decided to have my central a/c evaluated for maintenance. I contacted a major ... A: Chris, If the outdoor A/C runs fine after the contactor was changed ( the points burn and that is ...
R 410 pounds required to fill a empty system	5/19/2009
Q: While installing a new roof, the pressure line was hit with a nail. All the R 410 was lost on the 4 ... A: That depends on the size of the unit and length of line set. But, more important is that r-410a oil ...
Window unit	5/19/2009
Q: Mike, I live in 2000 sq ft home in Houston,TX. Our central air conditioning system has never been ... A: You can put plexiglass above it to cover the hole. If you do not have a thermostatic controlled ...
Noisy compressor	5/16/2009
Q: My A/C compressor (carrier,split unit) has a clatter noise out of the cylinder heads about every 10 ... A: Sorry thought I had answered this one. There is not an unloader. Are you saying the pressures ...
air conditioning	5/16/2009
Q: I have a bryant 80 plus natural gas furnace. Have changed out the factory thermostat with a ... A: There should also be a terminal on the tstat marked Rc which you have to jumper from R. If not ...
A/C	5/15/2009
Q: This particular system is a split--heat pump R-22.This unit has a sight glass on the liquid ... A: I am taking this question from our question pool....The sight glass is supposed to be free of ...
TXV valve install/freeze up	5/14/2009
Q: Will a faulty TXV valve make the coil freeze up even if the unit has plenty of refrigerant? My HVAC ... A: It is impossible to tell if the unit is properly charged with a bad txv. The way to trouble shoot a ...
A/C oil in pipe work	5/14/2009
Q: I was installing a new fuse board for the A/C engineer, I made the final connection's but unbeknown ... A: Paul, ask him to explain how having a vacuum on the line set ( a lower atmospheric pressure than the ...
Power Vent water heater	5/13/2009
Q: The vent fan on this heater stays on continuously. The flame comes on and off as needed, but the fan ... A: Dan, you have to have the motor running to make the pressure switch or as you have found out it will ...
AC Compressor Location Dilemma	5/13/2009
Q: Our outside AC compressor unit is located directly outside of our kitchen in the backyard set off ... A: You should never have more than 50 feet of line set. To figure length, you must add 10 feet for ...

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